How does adding String with Integer work in JavaScript? [duplicate]

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duplicatestringadding
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Is saying "being honest" instead of "to be honest" common? ,As - always means number subtraction in JavaScript, using - will always implicitly attempt parsing both the left and right side of the expression as integer., About , Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers

"" + 1 === "1"
"1" + 10 === "110"
"110" + 2 === "1102"
"1102" - 5 === 1097
1097 + "8" === "10978"
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The repeat() method constructs and returns a new string which contains the specified number of copies of the string on which it was called, concatenated together. ,A new string containing the specified number of copies of the given string., An integer between 0 and +Infinity, indicating the number of times to repeat the string. , This method has been added to the ECMAScript 2015 specification and may not be available in all JavaScript implementations yet. However, you can polyfill String.prototype.repeat() with the following snippet:

repeat(count)
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Given an array arr[] consisting of N strings, the task is to modify the array by replacing the duplicate strings by appending ay number such that all the strings in the array are unique.,Append digits to the end of duplicate strings to make all strings in an array unique,Find the smallest window in a string containing all characters of another string,Approach: The idea is to traverse the array and store the frequency of each string in arr[] in a Hashmap. While storing the frequency, if the string has no previous occurrences, then leave the string unchanged. Otherwise, append its frequency at the end. Finally, print all the unique strings present in the array arr[].

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let string = 'Plumbus'
let count = 3

string.repeat(count); // -> 'PlumbusPlumbusPlumbus'
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If you come from another language, such as Ruby, you will be familiar with the term string interpolation. That's exactly what template strings is trying to achieve. It's a simple way to include expressions in your string creation which is readable and concise.,So template strings for the win! 👑,Resolved with Template Strings,With concat, you can create a new string by calling the method on a string.

const icon = '👋';

// Template Strings
`hi ${icon}`;

// join() Method
['hi', icon].join(' ');

// Concat() Method
''.concat('hi ', icon);

// + Operator
'hi ' + icon;

// RESULT
// hi 👋
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Because strings must be written within quotes, C# will misunderstand this string, and generate an error:,There are many string methods available, for example ToUpper() and ToLower(), which returns a copy of the string converted to uppercase or lowercase:,A string in C# is actually an object, which contain properties and methods that can perform certain operations on strings. For example, the length of a string can be found with the Length property:,Fill in the missing part to create a greeting variable of type string and assign it the value Hello.

Create a variable of type string and assign it a value:

string greeting = "Hello";
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Since TypeScript version 1.4, TypeScript has included support for ES6 Template strings. Template strings are used to embed expressions into strings.,The replace() method replaces the matched substring with the specified string. The regular expression can also be used for searching.,The split() method splits a string into substrings based on a specified separator character and returns an array of substrings. ,String is another primitive data type that is used to store text data. String values are surrounded by single quotation marks or double quotation marks.

let employeeName: string = 'John Smith';
//OR
let employeeName: string = "John Smith";
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Programmers concerned about the complexity and readability of their code sometimes use the snprintf function instead. ,[3] N2349 – Toward more efficient string copying and concatenation., The function combines the properties of memcpy, memchr, and the best aspects of the APIs discussed above. ,Like strlcpy, it copies (at most) the specified number of characters from the source sequence to the destination, without writing beyond it. This resolves the inefficiency complaint about strncpy and stpncpy.

The optimal complexity of concatenating two or more strings is linear in the number of characters. But, as mentioned above, having the functions return the destination pointer leads to the operation being significantly less than optimally efficient. The functions traverse the source and destination sequences and obtain the pointers to the end of both. The pointers point either at or just past the terminating NUL ('\0') character that the functions (with the exception of strncpy) append to the destination. However, by returning a pointer to the first character rather than the last (or one just past it), the position of the NUL character is lost and must be computed again when it's needed. This inefficiency can be illustrated on an example concatenating two strings, s1 and s2, into the destination buffer d. The idiomatic (though far from ideal) way to append two strings is by calling the strcpy and strcat functions as follows.

	strcat(strcpy(d, s1), s2);
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