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Check if an array is empty or exists
...loading for the first time, I need to check if there is an image in image_array and load the last image.
22 Answers
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Get all unique values in a JavaScript array (remove duplicates)
I have an array of numbers that I need to make sure are unique. I found the code snippet below on the internet and it works great until the array has a zero in it. I found this other script here on Stack Overflow that looks almost exactly like it, but it doesn't fail.
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Exploitable PHP functions
...nFunction($_GET['func_name']); $func->invoke(); or $func->invokeArgs(array());
List of functions which accept callbacks
These functions accept a string parameter which could be used to call a function of the attacker's choice. Depending on the function the attacker may or may not have the ...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...difference in behavior of boolean and bitwise operations on lists vs NumPy arrays?
8 Answers
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Removing nan values from an array
I want to figure out how to remove nan values from my array. My array looks something like this:
11 Answers
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Difference between string and char[] types in C++
I know a little C and now I'm taking a look at C++.
I'm used to char arrays for dealing with C strings, but while I look at C++ code I see there are examples using both string type and char arrays:
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Best way to test for a variable's existence in PHP; isset() is clearly broken
... the variable you are checking would be in the global scope you could do:
array_key_exists('v', $GLOBALS)
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What's the difference between array_merge and array + array?
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The difference is:
The + operator takes the union of the two arrays, whereas the array_merge function takes the union BUT the duplicate keys are overwritten.
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node.js: read a text file into an array. (Each line an item in the array.)
I would like to read a very, very large file into a JavaScript array in node.js.
13 Answers
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Ruby - elegantly convert variable to an array if not an array already
Given an array, a single element, or nil, obtain an array - the latter two being a single element array and an empty array respectively.
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