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How do I replace a character at a particular index in JavaScript?

I have a string, let's say Hello world and I need to replace the char at index 3. How can I replace a char by specifying a index? ...
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Why is argc not a constant?

...ough getopt's prototype suggests it won't modify argv[] but may modify the strings pointed to, the Linux man page indicates that getopt permutes its arguments, and it appears they know they're being naughty. The man page at the Open Group does not mention this permutation.) Putting const on argc a...
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C++ convert hex string to signed integer

I want to convert a hex string to a 32 bit signed integer in C++. 9 Answers 9 ...
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Django template tag to truncate text

...mplate filter, that add "..." to the end of (last word of) the (truncated) string as well: from django import template register = template.Library() @register.filter("truncate_chars") def truncate_chars(value, max_length): if len(value) > max_length: truncd_val = value[:max_length] ...
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Stripping everything but alphanumeric chars from a string in Python

What is the best way to strip all non alphanumeric characters from a string, using Python? 11 Answers ...
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How do I remove code duplication between similar const and non-const member functions?

... { // Two lines -- one cast. This is slightly less ugly but takes an extra line. const X& constMe = *this; return const_cast<Z&>( constMe.z(index) ); } #endif }; NOTE: It is important that you do NOT put the logic in the non-const function and have the const-fun...
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How to create a GUID/UUID in Python

... Well, as you can see above, str(uuid4()) returns a string representation of the UUID with the dashes included, while uuid4().hex returns "The UUID as a 32-character hexadecimal string" – stuartd Jan 30 '18 at 10:08 ...
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How do you read a file into a list in Python? [duplicate]

...: lines = f.read().splitlines() this will give you a list of values (strings) you had in your file, with newlines stripped. also, watch your backslashes in windows path names, as those are also escape chars in strings. You can use forward slashes or double backslashes instead. ...
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How to ignore whitespace in a regular expression subject string?

Is there a simple way to ignore the white space in a target string when searching for matches using a regular expression pattern? For example, if my search is for "cats", I would want "c ats" or "ca ts" to match. I can't strip out the whitespace beforehand because I need to find the begin and en...
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Can I convert a C# string value to an escaped string literal

In C#, can I convert a string value to a string literal, the way I would see it in code? I would like to replace tabs, newlines, etc. with their escape sequences. ...