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Migration: Cannot add foreign key constraint
... however when I migrate my table using artisan i am thrown the following error:
33 Answers
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What is Android keystore file, and what is it used for?
This is a general question, but particularly I am interested in it's use for Android. What is a keystore file, and what is it used for?
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What is the best way to compare floats for almost-equality in Python?
...s a good one), it's worth noting that the documentation also says: "Modulo error checking, etc, the function will return the result of..." In other words, the isclose function (above) is not a complete implementation.
– rkersh
Jul 14 '16 at 19:50
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How can I keep Bootstrap popovers alive while being hovered?
... I am triggering it on mouseover of a button. I want to keep this popover alive while the popover itself is being hovered, but it disappears as soon as the user stops hovering over the button. How can I do this?
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“Diff” an image using ImageMagick
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– Brecht Machiels
Mar 16 '16 at 13:05
Here's a script to visually diff two PDFs page-by-page using this method: gist....
Efficient evaluation of a function at every cell of a NumPy array
Given a NumPy array A , what is the fastest/most efficient way to apply the same function, f , to every cell?
6 Ans...
How to split text without spaces into list of words?
...sick ?
– RetroCode
Sep 22 '16 at 19:05
9
This is excellent. I've turned it into a pip package: p...
Stack smashing detected
...caused due to a protection mechanism used by gcc to detect buffer overflow errors. For example in the following snippet:
#include <stdio.h>
void func()
{
char array[10];
gets(array);
}
int main(int argc, char **argv)
{
func();
}
The compiler, (in this case gcc) adds protection...
C++ unordered_map using a custom class type as the key
...I put this at the bottom of my Key.cpp file but I am getting the following error: Error 57 error C2440: 'type cast' : cannot convert from 'const Key' to 'size_t' c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional. I am guessing that the compiler is not finding my hash method...
Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...1 = [=]() mutable {x = 42;}; // OK
auto f2 = [=]() {x = 42;}; // Error: a by-value capture cannot be modified in a non-mutable lambda
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