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How to check that an object is empty in PHP?
How to find if an object is empty or not in PHP.
11 Answers
11
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Remove empty array elements
...all this for you:
print_r(array_filter($linksArray));
Keep in mind that if no callback is supplied, all entries of array equal to FALSE (see converting to boolean) will be removed. So if you need to preserve elements that are i.e. exact string '0', you will need a custom callback:
// PHP 7.4 and...
Distinct not working with LINQ to Objects
...custom objects.
All it does is look at your list and see that it has two different objects (it doesn't care that they have the same values for the member fields).
One workaround is to implement the IEquatable interface as shown here.
If you modify your Author class like so it should work.
public...
Difference between objectForKey and valueForKey?
What is the difference between objectForKey and valueForKey ?
I looked both up in the documentation and they seemed the same to me.
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Set Colorbar Range in matplotlib
...n will scale the colours so that what used to represent the value 1.0 will now represent the max value in my data. The colorbar will show 0..1 as I need it (with vmin=0, vmax=1), but everything above this max value will be the same colour...
– Paul
Jul 30 '10 a...
Create a .csv file with values from a Python list
... Writerows seems to break up each element in the list into columns if each element is a list as well. This is pretty handy for outputting tables.
– whatnick
Oct 7 '14 at 5:22
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Block Declaration Syntax List
... I presume) is notoriously incongruous. Passing blocks as arguments looks different than declaring blocks as ivars, which looks different than typedef ing blocks.
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How to change background color in android app
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The first two letters of an 8 letter color code provide the alpha value, if you are using the html 6 letter color notation the color is opaque.
Eg :
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How to find out if an item is present in a std::vector?
...ind(vec.begin(), vec.end(), item) != vec.end()
This returns a bool (true if present, false otherwise). With your example:
#include <algorithm>
#include <vector>
if ( std::find(vec.begin(), vec.end(), item) != vec.end() )
do_this();
else
do_that();
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Secure hash and salt for PHP passwords
...that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection.
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