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schema builder laravel migrations unique on two columns
...nique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
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Is there an ExecutorService that uses the current thread?
...PoolSize constructor parameter (i.e. maximumPoolSize can't be <=0).
In order to circumvent that, I did the following:
private static ExecutorService currentThreadExecutorService() {
CallerRunsPolicy callerRunsPolicy = new ThreadPoolExecutor.CallerRunsPolicy();
return new ThreadPoolExecu...
Reasons for using the set.seed function
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Advantage of switch over if-else statement
...he clearest code is probably:
if (RequiresSpecialEvent(numError))
fire_special_event();
Obviously this just moves the problem to a different area of the code, but now you have the opportunity to reuse this test. You also have more options for how to solve it. You could use std::set, for exa...
JavaScript string newline character?
...or instance, returning to the beginning of the line in a console window in order to overwrite the line, without moving to the next line. This is often used to write changing percent progress indicators in command line utilities.
– Dan Bechard
Nov 9 '15 at 15:55...
When is a Java method name too long? [closed]
...leItems() and getEligibleItemsCount() next to each other in alphabetically ordered lists (e.g. autocompletion or javadoc)
– sfussenegger
Feb 9 '10 at 17:37
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How does Google's Page Speed lossless image compression work?
...lly interested in the technical details, check out the source code:
png_optimizer.cc
jpeg_optimizer.cc
webp_optimizer.cc
For PNG files, they use OptiPNG with some trial-and-error approach
// we use these four combinations because different images seem to benefit from
// different parameters...
Show a Form without stealing focus?
...hWnd, // Window handle
int hWndInsertAfter, // Placement-order handle
int X, // Horizontal position
int Y, // Vertical position
int cx, // Width
int cy, // Height
uint uFlags); // Window posi...
Tools for Generating Mock Data? [closed]
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Yeah it's less costly, on the order of the same price as RedGate's tool, but in addition you have to qualify as an ISV and that means buying other stuff. Thanks for the link anyway, no doubt it'll be useful for someone. +1
– Bill Ka...
“X does not name a type” error in C++
... before you use it as a member. This is solved by reversing the definition order. However, you have a cyclic dependency: if you move MyMessageBox above User, then in the definition of MyMessageBox the name User won't be defined!
What you can do is forward declare User; that is, declare it but don't...