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How do CSS triangles work?
...e Acts
As alex said, borders of equal width butt up against each other at 45 degree angles:
When you have no top border, it looks like this:
Then you give it a width of 0...
...and a height of 0...
...and finally, you make the two side borders transparent:
That results in a triangle....
Print current call stack from a method in Python code
...stack.py", line 10, in <module>
# f()
# File "so-stack.py", line 4, in f
# g()
# File "so-stack.py", line 7, in g
# for line in traceback.format_stack():
If you really only want to print the stack to stderr, you can use:
traceback.print_stack()
Or to print to stdout (useful if...
Adjusting the Xcode iPhone simulator scale and size [duplicate]
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edited Sep 4 at 21:31
Jean-François Fabre♦
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Android: Expand/collapse animation
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744
I see that this question became popular so I post my actual solution. The main advantage is tha...
Fastest way to determine if an integer's square root is an integer
...t obvious answers. This includes negative numbers and looking at the last 4 bits. (I found looking at the last six didn't help.) I also answer yes for 0. (In reading the code below, note that my input is int64 x.)
if( x < 0 || (x&2) || ((x & 7) == 5) || ((x & 11) == 8) )
retu...
AngularJS - $anchorScroll smooth/duration
...breton/angular-smoothscroll
https://gist.github.com/justinmc/d72f38339e0c654437a2
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Fix code indentation in Xcode
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224
Before Xcode 9 (for Xcode 9 see default shortcut below)
select text
right-click
there's a "R...
ASP.NET MVC 404 Error Handling [duplicate]
I've made the changes outlined at 404 Http error handler in Asp.Net MVC (RC 5) and I'm still getting the standard 404 error page. Do I need to change something in IIS?
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How to use UIScrollView in Storyboard
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149
I'm answering my own question because I just spent 2 hours to find the solution and StackOverfl...
MySQL Conditional Insert
..., try:
INSERT INTO x_table(instance, user, item)
SELECT 919191, 123, 456
FROM dual
WHERE NOT EXISTS (SELECT * FROM x_table
WHERE user = 123
AND item = 456)
In this, dual is a table with one row only (found originall...