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Invalid argument supplied for foreach()
It often happens to me to handle data that can be either an array or a null variable and to feed some foreach with these data.
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Is there a difference between foreach and map?
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Array.protototype.map method & Array.protototype.forEach are both quite similar.
Run the following code: http://labs.codecademy.com/bw1/6#:workspace
var arr = [1, 2, 3, 4, 5];
arr.map(function(val, ind, arr){
conso...
How to convert an array of strings to an array of floats in numpy?
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Well, if you're reading the data in as a list, just do np.array(map(float, list_of_strings)) (or equivalently, use a list comprehension). (In Python 3, you'll need to call list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a nu...
Where is Java's Array indexOf?
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There are a couple of ways to accomplish this using the Arrays utility class.
If the array is not sorted and is not an array of primitives:
java.util.Arrays.asList(theArray).indexOf(o)
If the array is primitives and not sorted, one should use a solution offered by one of the o...
How to sort an array of associative arrays by value of a given key in PHP?
Given this array:
19 Answers
19
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How to compare arrays in C#? [duplicate]
How can I compare two arrays in C#?
6 Answers
6
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Get the last item in an array
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if (loc_array[loc_array.length - 1] === 'index.html') {
// do something
} else {
// something else
}
In the event that your server serves the same file for "index.html" and "inDEX.htML" you can also use: .toLowerCase().
Thou...
How to convert a char array to a string?
Converting a C++ string to a char array is pretty straightorward using the c_str function of string and then doing strcpy . However, how to do the opposite?
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How to store values from foreach loop into an array?
Need to store values from foreach loop into an array, need help doing that.
8 Answers
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From an array of objects, extract value of a property as array
I have JavaScript object array with the following structure:
16 Answers
16
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