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How to read if a checkbox is checked in PHP?
...="value1">
After submitting the form you can check it with:
isset($_POST['test'])
or
if ($_POST['test'] == 'value1') ...
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How to delete items from a dictionary while iterating over it?
...;>> mydict
{'four': 4, 'three': 3, 'one': 1}
If you need to delete based on the items value, use the items() method instead:
>>> for k, v in mydict.items():
... if v == 3:
... del mydict[k]
...
>>> mydict
{'four': 4, 'one': 1}
...
Transpose/Unzip Function (inverse of zip)?
...
You could also use izip_longest
– Marcin
Sep 26 '13 at 16:52
4
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Why do we need extern “C”{ #include } in C++?
...the prototype as a C function, the C++ will actually generate code calling _Zprintf, plus extra crap at the end.)
So: use extern "C" {...} when including a c header—it's that simple. Otherwise, you'll have a mismatch in compiled code, and the linker will choke. For most headers, however, you won'...
jQuery find events handlers registered with an object
...ta. Read this jQuery blog post. You should now use this instead:
jQuery._data( elem, "events" );
elem should be an HTML Element, not a jQuery object, or selector.
Please note, that this is an internal, 'private' structure, and shouldn't be modified. Use this for debugging purposes only.
In o...
Remove duplicate elements from array in Ruby
...
Just another alternative if anyone cares.
You can also use the to_set method of an array which converts the Array into a Set and by definition, set elements are unique.
[1,2,3,4,5,5,5,6].to_set => [1,2,3,4,5,6]
...
Comparing two NumPy arrays for equality, element-wise
... or simply want to be safe: use one of the specialized functions:
np.array_equal(A,B) # test if same shape, same elements values
np.array_equiv(A,B) # test if broadcastable shape, same elements values
np.allclose(A,B,...) # test if same shape, elements have close enough values
...
UITableView Setting some cells as “unselectable”
...RowAtIndexPath:(NSIndexPath *)path
{
// Determine if row is selectable based on the NSIndexPath.
if (rowIsSelectable) {
return path;
}
return nil;
}
This prevents the row from being selected and tableView:didSelectRowAtIndexPath: from being called. Note, however, that this...
UICollectionView Set number of columns
...orCellWithReuseIdentifier: "Cell")
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 59
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICo...
Detect blocked popup in Chrome
...code I use for cross-browser detection, without the Chrome part.
function _hasPopupBlocker(poppedWindow) {
var result = false;
try {
if (typeof poppedWindow == 'undefined') {
// Safari with popup blocker... leaves the popup window handle undefined
result = t...