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What is the difference between & and && in Java?
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Besides not being a lazy evaluator by evaluating both operands, I think the main characteristics of bitwise operators compare each bytes of operands like in the following example:
int a = 4;
int b = 7;
System.out.println(a & b); // prints 4
//meaning in a...
How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
...ricks (10.9).
This package enables UNIX-style development via Terminal by installing
command line developer tools, as well as Mac OS X SDK frameworks and
headers. Many useful tools are included, such as the Apple LLVM
compiler, linker, and Make. If you use Xcode, these tools are also
emb...
Jquery UI tooltip does not support html content
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You can also achieve this completely without jQueryUI by using CSS styles. See the snippet below:
div#Tooltip_Text_container {
max-width: 25em;
height: auto;
display: inline;
position: relative;
}
div#Tooltip_Text_container a {
text-decoration: none;
c...
Mercurial stuck “waiting for lock”
...borted pull ran sucessfully.
The lock had been set more than 2 years ago, by a process on a machine that is no longer on the LAN. Shame on the hg developers for a) not documenting locks adequately; b) not timestamping them for automatic removal when they get stale.
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Django : How can I see a list of urlpatterns?
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Actually I was wrong, this feature is not provided by django after all.
– robert
Jan 14 '12 at 17:23
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How to retrieve all keys (or values) from a std::map and put them into a vector?
...const& pair) {
return pair.first;
});
and using C++14 (as noted by @ivan.ukr) we can replace decltype(map_in)::value_type with auto.
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How do I enable file editing in Visual Studio's debug mode?
... ENC may be disabled on your computer
Certain profiles do not enable ENC by default and it must be explicitly enabled
You may be running on a 64 bit OS and have your .Net app set to "Any CPU". ENC is not available on 64 bit (CLR limitation). You'll have to set the app back to x86 for ENC to work...
How can I add a help method to a shell script?
...r expected
For anything more complex use getopt or getopts
As suggested by others, if you have more than a single simple option, or need your option to accept an argument, then you should definitely go for the extra complexity of using getopts.
As a quick reference, I like The 60 second getopts ...
How to create a JavaScript callback for knowing when an image is loaded?
... window.onload = function () {
var logo = document.getElementById('sologo');
logo.onload = function () {
alert ("The image has loaded!");
};
setTimeout(function(){
logo.src = 'https://edmullen.net/test/rc.jpg';
...
how to POST/Submit an Input Checkbox that is disabled?
...mply duplicate what the checkbox already does, but if it has been disabled by javascript or soemthing it will still be disabled, could you explain a bit more what you were going for, maybe I mis understand since its just a line of code
– ScottC
Oct 10 '12 at 12...