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What would be C++ limitations compared C language? [closed]
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This is prompted by a an answer I gave to a current question which asks about a generics library for C - the questioner specifically states that they do not want to use C++.
C is a complete programming language. C is not an a...
What is std::string::c_str() lifetime?
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The c_str() result becomes invalid if the std::string is destroyed or if a non-const member function of the string is called. So, usually you will want to make a copy of it if you need to keep it around.
In the case of your example, it appears that the results of c_str() are u...
How many String objects will be created when using a plus sign?
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Surprisingly, it depends.
If you do this in a method:
void Foo() {
String one = "1";
String two = "2";
String result = one + two + "34";
Console.Out.WriteLine(result);
}
then the compiler seems to emit the code...
jQuery - Get Width of Element when Not Visible (Display: None)
It seems like in jQuery when an element is not visible width() returns 0. Makes sense, but I need to get the width of a table in order to set the width of the parent before I show the parent.
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How to change max_allowed_packet size
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edited Jan 16 '19 at 10:02
Destroyica
3,85711 gold...
Abort makefile if variable not set
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TL;DR: Use the error function:
ifndef MY_FLAG
$(error MY_FLAG is not set)
endif
Note that the lines must not be indented. More precisely, no tabs must precede these lines.
Generic solution
In case you're going to test many variables, it's worth defining an auxiliary function for t...
HTML5 form required attribute. Set custom validation message?
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Use setCustomValidity:
document.addEventListener("DOMContentLoaded", function() {
var elements = document.getElementsByTagName("INPUT");
for (var i = 0; i < elements.length; i++) {
elements[i].oninvalid = function(e) {
e.target.setCust...
How to get the path of a running JAR file?
...r , and I need to know, in the code, in which folder the running foo.jar is.
30 Answers
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Is there a JavaScript function that can pad a string to get to a determined length?
...pad it to a given length (I need spaces, but anything would do). I found this:
42 Answers
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The tilde operator in Python
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It is a unary operator (taking a single argument) that is borrowed from C, where all data types are just different ways of interpreting bytes. It is the "invert" or "complement" operation, in which all the bits of the input dat...