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Check whether an array is empty [duplicate]
... quick workaround you can do following:
$errors = array_filter($errors);
if (!empty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise in your particular case empty() construct will always return true if ...
Write bytes to file
...
If I understand you correctly, this should do the trick. You'll need add using System.IO at the top of your file if you don't already have it.
public bool ByteArrayToFile(string fileName, byte[] byteArray)
{
try
{
...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
I would like to know what exactly is the difference between querySelector and querySelectorAll against getElementsByClassName and getElementById ?
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In git how is fetch different than pull and how is merge different than rebase?
...ch and additionally merge the changes into your local branch.
What's the difference? pull updates you local branch with changes from the pulled branch. A fetch does not advance your local branch.
merge vs rebase
Given the following history:
C---D---E local
/
A---B---F---G...
How do I convert an integer to binary in JavaScript?
...ng(2) output is "-1".
To fix this issue, you can use the unsigned right shift bitwise operator (>>>) to coerce your number to an unsigned integer.
If you run (-1 >>> 0).toString(2) you will shift your number 0 bits to the right, which doesn't change the number itself but it will ...
sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t
... error, The actual string I am trying to insert is 74 chars long, it's: "/gifs/epic-fail-photos-there-i-fixed-it-aww-man-the-tire-pressures-low.gif"
...
What's the difference between & and && in MATLAB?
What is the difference between the & and && logical operators in MATLAB?
7 Answers
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How to get root view controller?
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if you are trying to access the rootViewController you set in your appDelegate. try this:
Objective-C
YourViewController *rootController = (YourViewController*)[[(YourAppDelegate*)
[[UIApp...
How to easily resize/optimize an image size with iOS?
...the iPhone is PNG, because it has optimizations for that format. However, if you want to store these images as JPEGs, you can take your UIImage and do the following:
NSData *dataForJPEGFile = UIImageJPEGRepresentation(theImage, 0.6);
This creates an NSData instance containing the raw bytes for a...
Git: How to squash all commits on branch
...D))
[That] automatically uses the branch you are currently on.
And if you use that, you can also use an alias, as the command doesn't rely on the branch name.
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