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Can I call a constructor from another constructor (do constructor chaining) in C++?
... constructors).
The syntax is slightly different from C#:
class Foo {
public:
Foo(char x, int y) {}
Foo(int y) : Foo('a', y) {}
};
C++03: No
Unfortunately, there's no way to do this in C++03, but there are two ways of simulating this:
You can combine two (or more) constructors via defau...
How to process SIGTERM signal gracefully?
...
A class based clean to use solution:
import signal
import time
class GracefulKiller:
kill_now = False
def __init__(self):
signal.signal(signal.SIGINT, self.exit_gracefully)
signal.signal(signal.SIGTERM, self.exit_gracefully)
def exit_gracefully(self,signu...
Propagate all arguments in a bash shell script
...
Use "$@" instead of plain $@ if you actually wish your parameters to be passed the same.
Observe:
$ cat foo.sh
#!/bin/bash
baz.sh $@
$ cat bar.sh
#!/bin/bash
baz.sh "$@"
$ cat baz.sh
#!/bin/bash
echo Received: $1
echo Received: $2
echo Received: $3
echo Received: $4
$ ./foo.sh first secon...
In javascript, is an empty string always false as a boolean?
... of ECMAScript, and ECMAScript language specification clearly defines this behavior:
ToBoolean
The result is false if the argument is the empty String (its length is zero);
otherwise the result is true
Quote taken from http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
...
Why exactly is eval evil?
I know that Lisp and Scheme programmers usually say that eval should be avoided unless strictly necessary. I’ve seen the same recommendation for several programming languages, but I’ve not yet seen a list of clear arguments against the use of eval . Where can I find an account of the potentia...
What is the maximum length of a URL in different browsers?
What is the maximum length of a URL in different browsers? Does it differ among browsers?
18 Answers
...
Why doesn't indexOf work on an array IE8?
...function for Array, to define the exact spec version, run this before trying to use it:
if (!Array.prototype.indexOf)
{
Array.prototype.indexOf = function(elt /*, from*/)
{
var len = this.length >>> 0;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? M...
Find the division remainder of a number
How could I go about finding the division remainder of a number in Python?
12 Answers
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How do I change Bootstrap 3 column order on mobile layout?
I'm making a responsive layout with a top fixed navbar. Underneath I have two columns, one for a sidebar (3), and one for content (9). Which on desktop looks like this
...
returning a Void object
...turn a Void type, when it isn't a primitive? Eg. I currently use null as below.
5 Answers
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