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What's the best way to trim std::string?
...p;s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch) {
return !std::isspace(ch);
}));
}
// trim from end (in place)
static inline void rtrim(std::string &s) {
s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch) {
return !std::is...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
...
__func__ is an implicitly declared identifier that expands to a character array variable containing the function name when it is used inside of a function. It was added to C in C99. From C99 §6.4.2.2/1:
The identifier __func__ is implicitly declared by the translator as if, immediatel...
JavaScript style for optional callbacks
...tions
( rest
, combs =>
callback (combs .concat (combs .map (c => [ x, ...c ])))
)
console.log (combinations (['A', 'B', 'C']))
// [ []
// , [ 'C' ]
// , [ 'B' ]
// , [ 'B', 'C' ]
// , [ 'A' ]
// , [ 'A', 'C' ]
// , [ 'A', 'B' ]
// , [ 'A', 'B...
Best Practices: working with long, multiline strings in PHP?
...t from the rest of the text and variables also stand out better if you use concatenation rather than inject them inside double quoted string. So I might do something like this with your original example:
$text = 'Hello ' . $vars->name . ','
. "\r\n\r\n"
. 'The second line starts two ...
Why 0 is true but false is 1 in the shell?
...the same.
Also it needs to be expected that some people cast errno to char or short at some point, or even to float. (int)((char)ENOLCK) is not ENOLCK when char is not at least 8-bit long (7-bit ASCII char machines are supported by UNIX), while (int)((char)0) is 0 independent of the architectur...
Where in memory are my variables stored in C?
...---> heap also stack (the teacher was trying to trick you)
pointers(ex: char *arr, int *arr) -------> heap data or stack, depending on the context. C lets you declare a global or a static pointer, in which case the pointer itself would end up in the data segment.
dynamically allocated space(us...
Generate fixed length Strings filled with whitespaces
I need to produce fixed length string to generate a character position based file. The missing characters must be filled with space character.
...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...d format
a two digit value denoting the cost parameter, followed by $
a 53 characters long base-64-encoded value (they use the alphabet ., /, 0–9, A–Z, a–z that is different to the standard Base 64 Encoding alphabet) consisting of:
22 characters of salt (effectively only 128 bits of the 132 d...
How to insert newline in string literal?
... = string.Format("first line{0}second line", Environment.NewLine);
String concatenation:
string x = "first line" + Environment.NewLine + "second line";
String interpolation (in C#6 and above):
string x = $"first line{Environment.NewLine}second line";
You could also use \n everywhere, and repl...
How do I pass the value (not the reference) of a JS variable to a function? [duplicate]
....length===0? arguments : arguments.length===0? args :
args.concat(Array.prototype.slice.call(arguments, 0))
);
};
};
}
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