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Drawable image on a canvas
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Very useful! At least when you need just a background picture with no rocket science involved!
– Asim
Jan 6 '15 at 1:31
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How do I hide an element when printing a web page?
...ork if you just use the code that is give. i just tried in firefox. so, at least in modern browsers this is the solution.
– luschn
Feb 21 '13 at 10:21
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Git - working on wrong branch - how to copy changes to existing topic branch
... following trick using a temporary branch to work:
This scenario works at least with VS 2015 Git plugin but would most likely work with any git tool.
checkout and make changes to files in master (ups!, wrong branch)
create a new branch "temp" (or any unused name you choose) from master. Checked o...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...which causes the exception.
You must either make the Stage optional in at least one of the entities (i.e. remove the [Required] attribute from the Stage properties) or disable cascading delete with Fluent API (not possible with data annotations):
modelBuilder.Entity<Card>()
.HasRequired(...
Check image width and height before upload with Javascript
...eight < 1100 || width < 750) {
alert("At least you can upload a 1100*750 photo size.");
return false;
}else{
alert("Uploaded image has valid Height and Width.");
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How to make custom error pages work in ASP.NET MVC 4
..."~/ErrorPage/Oops/404" probably should be "~/ErrorPage/Oops?404" right? At least that's what worked for me. Maybe that just depends on the routing.
– Josh Sutterfield
Dec 4 '15 at 23:41
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How can I check if an element exists in the visible DOM?
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@csuwldcat It worked for me, at least in Chrome with document.contains(document.documentElement). document does have Node on its prototype chain, as far as I can tell (document->HTMLDocument->Document->Node)
– alex
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How to remove constraints from my MySQL table?
...key constraints, it appears you still need the DROP FOREIGN KEY syntax, at least in MariaDB version 10.2
– Frank Forte
Dec 20 '18 at 18:58
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Constructors in JavaScript objects
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@AlanKis (At least in some Javascript engines) the stack trace will in the anonymous function case not even mention Foo, while in the latter case it will know that it's Foo being called. Very helpful for debugging.
–...
When to use enumerateObjectsUsingBlock vs. for
...each invocation of the block with an autorelease pool (as of OS X 10.10 at least). This explains the performance difference compared to for in which doesn't do that.
– Pol
Dec 5 '14 at 19:31
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