how to read HashMap in typescript 2.9

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}

-2

map = new Map<number, string>();

this.map.set(1, "educadmin");

this.map.set(6, "hr");

this.map.set(7, "tech");

console.log(map);

//process 1

for (let entry of this.map.entries()) {

    console.log(entry[0], entry[1]);  

}

//process 2

Array.from(map.values(), (value: string) => {

      console.log(value);

});

I get this when I logged to the console:

Map(0) {}

size: (...) 

__proto__: Map

[[Entries]]: Array(3)

  0:{6 => "hr"}

  1: {1 => "educadmin"}

  2: {7 => "tech"}

length: 3

I want to add get all these values -> hr , educadmin and tech to a string
I tried above 2 process but I am not able to read

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

1

And your question is...?

– Jared Smith
Nov 16 '18 at 18:45

I am not able to read the values

– Rajesh Rajoji
Nov 16 '18 at 18:46

3

No luck with what? I'm voting to close this as unclear. Post the code you've tried, along with the desired output and error messages (if any), and I'll consider retracting my close vote. Also not clear at all what this has to do with typescript.

– Jared Smith
Nov 16 '18 at 18:51

2

Read what values? Again, please edit the question with a minimal, complete, verifiable example. Everything you've posted is disjointed and in some cases contradictory. Reading values out of a map is a simple as calling someMap.get(key), if it's not working something else is going on but you haven't posted enough for me to say. Your edit made it worse, not better.

– Jared Smith
Nov 16 '18 at 18:57

1

That's a huge step in the right direction. Now edit the output that you get from running your code into the question and why it isn't correct, because Array.from(map.values()) gives me ["hr", "educadmin", "tech"].

– Jared Smith
Nov 16 '18 at 19:25

|
show 7 more comments

-2

map = new Map<number, string>();

this.map.set(1, "educadmin");

this.map.set(6, "hr");

this.map.set(7, "tech");

console.log(map);

//process 1

for (let entry of this.map.entries()) {

    console.log(entry[0], entry[1]);  

}

//process 2

Array.from(map.values(), (value: string) => {

      console.log(value);

});

I get this when I logged to the console:

Map(0) {}

size: (...) 

__proto__: Map

[[Entries]]: Array(3)

  0:{6 => "hr"}

  1: {1 => "educadmin"}

  2: {7 => "tech"}

length: 3

I want to add get all these values -> hr , educadmin and tech to a string
I tried above 2 process but I am not able to read

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

1

And your question is...?

– Jared Smith
Nov 16 '18 at 18:45

I am not able to read the values

– Rajesh Rajoji
Nov 16 '18 at 18:46

3

No luck with what? I'm voting to close this as unclear. Post the code you've tried, along with the desired output and error messages (if any), and I'll consider retracting my close vote. Also not clear at all what this has to do with typescript.

– Jared Smith
Nov 16 '18 at 18:51

2

Read what values? Again, please edit the question with a minimal, complete, verifiable example. Everything you've posted is disjointed and in some cases contradictory. Reading values out of a map is a simple as calling someMap.get(key), if it's not working something else is going on but you haven't posted enough for me to say. Your edit made it worse, not better.

– Jared Smith
Nov 16 '18 at 18:57

1

That's a huge step in the right direction. Now edit the output that you get from running your code into the question and why it isn't correct, because Array.from(map.values()) gives me ["hr", "educadmin", "tech"].

– Jared Smith
Nov 16 '18 at 19:25

|
show 7 more comments

-2

map = new Map<number, string>();

this.map.set(1, "educadmin");

this.map.set(6, "hr");

this.map.set(7, "tech");

console.log(map);

//process 1

for (let entry of this.map.entries()) {

    console.log(entry[0], entry[1]);  

}

//process 2

Array.from(map.values(), (value: string) => {

      console.log(value);

});

I get this when I logged to the console:

Map(0) {}

size: (...) 

__proto__: Map

[[Entries]]: Array(3)

  0:{6 => "hr"}

  1: {1 => "educadmin"}

  2: {7 => "tech"}

length: 3

I want to add get all these values -> hr , educadmin and tech to a string
I tried above 2 process but I am not able to read

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

map = new Map<number, string>();

this.map.set(1, "educadmin");

this.map.set(6, "hr");

this.map.set(7, "tech");

console.log(map);

//process 1

for (let entry of this.map.entries()) {

    console.log(entry[0], entry[1]);  

}

//process 2

Array.from(map.values(), (value: string) => {

      console.log(value);

});

I get this when I logged to the console:

Map(0) {}

size: (...) 

__proto__: Map

[[Entries]]: Array(3)

  0:{6 => "hr"}

  1: {1 => "educadmin"}

  2: {7 => "tech"}

length: 3

I want to add get all these values -> hr , educadmin and tech to a string
I tried above 2 process but I am not able to read

javascript angular6 typescript2.9

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

edited Nov 16 '18 at 19:41

Amy

22k1976133

edited Nov 16 '18 at 19:41

Amy

22k1976133

edited Nov 16 '18 at 19:41

Amy

22k1976133

asked Nov 16 '18 at 18:39

Rajesh Rajoji

asked Nov 16 '18 at 18:39

Rajesh Rajoji

asked Nov 16 '18 at 18:39

Rajesh Rajoji

1

And your question is...?

– Jared Smith
Nov 16 '18 at 18:45

I am not able to read the values

– Rajesh Rajoji
Nov 16 '18 at 18:46

3

No luck with what? I'm voting to close this as unclear. Post the code you've tried, along with the desired output and error messages (if any), and I'll consider retracting my close vote. Also not clear at all what this has to do with typescript.

– Jared Smith
Nov 16 '18 at 18:51

2

Read what values? Again, please edit the question with a minimal, complete, verifiable example. Everything you've posted is disjointed and in some cases contradictory. Reading values out of a map is a simple as calling someMap.get(key), if it's not working something else is going on but you haven't posted enough for me to say. Your edit made it worse, not better.

– Jared Smith
Nov 16 '18 at 18:57

1

That's a huge step in the right direction. Now edit the output that you get from running your code into the question and why it isn't correct, because Array.from(map.values()) gives me ["hr", "educadmin", "tech"].

– Jared Smith
Nov 16 '18 at 19:25

|
show 7 more comments

1

And your question is...?

– Jared Smith
Nov 16 '18 at 18:45

I am not able to read the values

– Rajesh Rajoji
Nov 16 '18 at 18:46

3

No luck with what? I'm voting to close this as unclear. Post the code you've tried, along with the desired output and error messages (if any), and I'll consider retracting my close vote. Also not clear at all what this has to do with typescript.

– Jared Smith
Nov 16 '18 at 18:51

2

Read what values? Again, please edit the question with a minimal, complete, verifiable example. Everything you've posted is disjointed and in some cases contradictory. Reading values out of a map is a simple as calling someMap.get(key), if it's not working something else is going on but you haven't posted enough for me to say. Your edit made it worse, not better.

– Jared Smith
Nov 16 '18 at 18:57

1

That's a huge step in the right direction. Now edit the output that you get from running your code into the question and why it isn't correct, because Array.from(map.values()) gives me ["hr", "educadmin", "tech"].

– Jared Smith
Nov 16 '18 at 19:25

And your question is...?

– Jared Smith
Nov 16 '18 at 18:45

I am not able to read the values

– Rajesh Rajoji
Nov 16 '18 at 18:46

No luck with what? I'm voting to close this as unclear. Post the code you've tried, along with the desired output and error messages (if any), and I'll consider retracting my close vote. Also not clear at all what this has to do with typescript.

– Jared Smith
Nov 16 '18 at 18:51

Read what values? Again, please edit the question with a minimal, complete, verifiable example. Everything you've posted is disjointed and in some cases contradictory. Reading values out of a map is a simple as calling someMap.get(key), if it's not working something else is going on but you haven't posted enough for me to say. Your edit made it worse, not better.

– Jared Smith
Nov 16 '18 at 18:57

That's a huge step in the right direction. Now edit the output that you get from running your code into the question and why it isn't correct, because Array.from(map.values()) gives me ["hr", "educadmin", "tech"].

– Jared Smith
Nov 16 '18 at 19:25

|
show 7 more comments

1 Answer
1

active

oldest

votes

I think you are looking for a solution to get the keys/values as arrays.

let keysAsArray = Array.from(map.keys());

let valueAsArray = Array.from(map.values());



console.log(keysAsArray);

console.log(valueAsArray);

The output is

[1, 6, 7]

["educadmin", "hr", "tech"]

answered Nov 16 '18 at 19:38

Charmis Varghese

906

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

1

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

add a comment |

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53343623%2fhow-to-read-hashmap-in-typescript-2-9%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

I think you are looking for a solution to get the keys/values as arrays.

let keysAsArray = Array.from(map.keys());

let valueAsArray = Array.from(map.values());



console.log(keysAsArray);

console.log(valueAsArray);

The output is

[1, 6, 7]

["educadmin", "hr", "tech"]

answered Nov 16 '18 at 19:38

Charmis Varghese

906

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

1

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

add a comment |

I think you are looking for a solution to get the keys/values as arrays.

let keysAsArray = Array.from(map.keys());

let valueAsArray = Array.from(map.values());



console.log(keysAsArray);

console.log(valueAsArray);

The output is

[1, 6, 7]

["educadmin", "hr", "tech"]

answered Nov 16 '18 at 19:38

Charmis Varghese

906

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

1

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

add a comment |

I think you are looking for a solution to get the keys/values as arrays.

let keysAsArray = Array.from(map.keys());

let valueAsArray = Array.from(map.values());



console.log(keysAsArray);

console.log(valueAsArray);

The output is

[1, 6, 7]

["educadmin", "hr", "tech"]

answered Nov 16 '18 at 19:38

Charmis Varghese

906

I think you are looking for a solution to get the keys/values as arrays.

let keysAsArray = Array.from(map.keys());

let valueAsArray = Array.from(map.values());



console.log(keysAsArray);

console.log(valueAsArray);

The output is

[1, 6, 7]

["educadmin", "hr", "tech"]

answered Nov 16 '18 at 19:38

Charmis Varghese

906

answered Nov 16 '18 at 19:38

Charmis Varghese

906

answered Nov 16 '18 at 19:38

Charmis Varghese

906

answered Nov 16 '18 at 19:38

Charmis Varghese

906

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

1

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

add a comment |

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

1

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

Yeah. I tried this way. But it does it work. I’m getting empty array. My typescript Version is 2.9 and using ecma 5. Do you feel that your code still supports these versions.

– Rajesh Rajoji
Nov 17 '18 at 1:03

Map is introduced in ES6. You need to use polyfil. Can you take a look at this, this, and this to get more insights and eventually to solve your issue ?

– Charmis Varghese
Nov 17 '18 at 22:14

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Vfrdtyky