work whit data type #12
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ramin/data_type/data_type.js
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| //number | |||
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| let num1 = 10; | |||
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you should always use const unless you really need to reassign.
https://stackoverflow.com/questions/41086633/in-javascript-why-should-i-usually-prefer-const-to-let
ramin/data_type/data_type.js
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| //// M A P | ||
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| let m1 = new Map(); |
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use better name
| let m1 = new Map(); | |
| const map = new Map(); |
| let s1 = "salam 1"; | ||
| let s2 = 'salam 2'; | ||
| let s3 = `salam 3 ${5}`; | ||
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[High]: We have other types of typing in JavaScript as well.
- bigint
- undefined
- boolean
- function
- symbol
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Also, check this:
typeof null
typeof 2 + "2"
typeof 2 - "2"
typeof 2 * "2"
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yes we have.
but you write string and number i think you want this two type.
| return res; | ||
| } | ||
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| function diffrent(s1,s2){ |
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great!
There is diffrence function built in. Please write this too
ramin/data_type/data_type.js
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| } | ||
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| function intersection(s1,s2){ |
| wm.has(obj); | ||
| wm.delete(obj); | ||
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| /// S E T |
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also, check this:
- isSubsetOf
- isSupersetOf
ramin/data_type/data_type.js
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| // WEAK SET | ||
| ///that's like ordinary set but there is some diffrent | ||
| // 1 - elements must ba an obj | ||
| // 2 - cant't iterate from a weak set |
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| // 2 - cant't iterate from a weak set | |
| // 2 - cant't iterate from a weak set | |
| // 3- WeakSet does not have size property | |
| //4- WeakSet does not have clear, keys, values, entries, forEach methods. |
| //is exist ? | ||
| console.log(m1.has("ahmad")); | ||
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| //tree method to iterate |
closes : #7