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Retina displays, high-res background images
...nted bug in certain versions of Firefox and should be written like this in order to support older versions (prior to Firefox 16).
- Source
As @LiamNewmarch mentioned in the comments below, you can include the background-size in your shorthand background declaration like so:
.box{
background...
Generate a random letter in Python
...+ 26). random.randrange() is exclusive on its upper bound, meaning that in order to get the whole range of characters 97 - 122, the argument passed must be 123.
– Kieran Moynihan
Apr 4 '19 at 17:52
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Getting the names of all files in a directory with PHP
...this */
$hideName = array('.','..','.DS_Store');
// Sort in ascending order - this is default
$files = scandir($dir);
/* While this to there no more files are */
foreach($files as $filename) {
if(!in_array($filename, $hideName)){
/* echo the name of the files */
echo "$filenam...
What is a mutex?
...eduling algorithm can swap between threads at any time, you don't know the order in which the threads will attempt to access the shared data. Therefore, the result of the change in data is dependent on the thread scheduling algorithm, i.e. both threads are "racing" to access/change the data.
Real li...
Why is String immutable in Java?
...ant Pool article, every application creates too many string objects and in order to save JVM from first creating lots of string objects and then garbage collecting them. JVM stores all string objects in a separate memory area called String constant pool and reuses objects from that cached pool.
When...
Erasing elements from a vector
...terested in how many times an element has been added to your vector or the order the elements were added.
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Declaring an enum within a class
...owing code snippet, the Color enum is declared within the Car class in order to limit the scope of the enum and to try not to "pollute" the global namespace.
...
Set cURL to use local virtual hosts
...nd. The default config file is checked for in the following places in this order:
1) curl tries to find the "home dir": It first checks for the CURL_HOME and then the HOME environment variables. Failing that, it uses getpwuid() on UNIX-like systems (which returns the home dir
given ...
Class method differences in Python: bound, unbound and static
...calls the __get__() method of the CPO to access the value it contains.
In order to determine if a CPO is a descriptor, python interpretor checks if it implements the descriptor protocol. To implement descriptor protocol is to implement 3 methods
def __get__(self, instance, owner)
def __set__(self,...
C# Thread safe fast(est) counter
...ok at the C# lock() statement's IL. Here you will see calls to Monitor in order to begin or end a section.
In other words, .Net lock() statement is doing a lot more than the .Net Interlocked.Increment.
SO, if all you want to do is increment a variable, Interlock.Increment will be faster. Revie...