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How do I check if a directory exists? “is_dir”, “file_exists” or both?
...Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from creating a directory name 'foo'.
...
Socket.IO - how do I get a list of connected sockets/clients?
...omes io.connected, io.sockets.adapter.rooms becomes io.adapter.rooms ...)
Tested on socket.io 1.3.5
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Can you detect “dragging” in jQuery?
...t this functionality:
var isDragging = false;
var mouseDown = false;
$('.test_area')
.mousedown(function() {
isDragging = false;
mouseDown = true;
})
.mousemove(function(e) {
isDragging = true;
if (isDragging === true && mouseDown === true) {
...
On - window.location.hash - Change?
...
The latest Firefox build (3.6 alpha) also now supports the native hash changed event: developer.mozilla.org/en/DOM/window.onhashchange It is certainly worth doing a check for this event, but note that IE8 will tell you the event e...
In Python, when to use a Dictionary, List or Set?
...of distinct hashable objects. A set is commonly used to include membership testing, removing duplicates from a sequence, and computing mathematical operations such as intersection, union, difference, and symmetric difference.
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Replacing instances of a character in a string
...ne)):
if (line[i]==";"):
line = line[:i] + ":" + line[i+1:]
Havent tested it though.
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In Python, how do I index a list with another list?
...
A quick timing test (no pysco or anything, so make of it what you will) showed the list comprehension 2.5x faster than the loop (1000 elements, repeated 10000 times).
– James Hopkin
Jun 18 '09 at 12:00...
How to combine date from one field with time from another field - MS SQL Server
... get milliseconds accuracy this way, but that would normally be OK. I have tested this in SQL Server 2008.
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Remove empty strings from a list of strings
...eving data from db? list of arguments for a function while doing automated testing?
– thiruvenkadam
Feb 24 '15 at 5:22
3
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How can I override Bootstrap CSS styles?
...oosts the prio big time, we don't have to worry about calculating prio and testing as hard whether we have it always right. easier with an id if you want to definitively overwrite the default.
– hogan
Sep 11 '15 at 6:15
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