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jQuery .hasClass() vs .is()
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Update:
I committed a test following a comment and four upvotes to very comment. It turns out that what I had said is the correct answer. Here is the result:
http://jsperf.com/hasclass-vs-is-so
The is is multi-purpose, you can for example do is(...
Change type of varchar field to integer: “cannot be cast automatically to type integer”
...ble PgAdmin-III isn't showing you the full error. Here's what happens if I test it in psql on PostgreSQL 9.2:
=> CREATE TABLE test( x varchar );
CREATE TABLE
=> insert into test(x) values ('14'), (' 42 ');
INSERT 0 2
=> ALTER TABLE test ALTER COLUMN x TYPE integer;
ERROR: column "x" cann...
How can I get the line number which threw exception?
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You get something similar to: System.Exception: Test at Tests.Controllers.HomeController.About() in c:\Users\MatthewB\Documents\Visual Studio 2013\Projects\Tests\Tests\Controllers\HomeController.cs:line 22
– Professor of programming
D...
git pull while not in a git directory
...ne full_name()
Signed-off-by: Denton Liu
Before, we were running test_must_fail full_name. However, test_must_fail should only be used on git commands.
Inline full_name() so that we can use test_must_fail on the git command directly.
When full_name() was introduced in 28fb84382b ("I...
How to Generate unique file names in C#
...too, and doesn't suffer from race conditions.
For example, if you pass it test.txt, it will attempt to create files in this order:
test.txt
test (2).txt
test (3).txt
etc. You can specify the maximum attempts or just leave it at the default.
Here's a complete example:
class Program
{
stati...
C# loop - break vs. continue
...s here just use the standard for loop, but will this work for pre and post tested while loops? The goto notation leads me to believe so, but need some verification.
– Daniel Park
Aug 8 '13 at 3:02
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What does send() do in Ruby?
...ibility checks, so that you can call private methods, too (useful for unit testing).
If there is really no variable before send, that means that the global Object is used:
send :to_s # "main"
send :class # Object
s...
How to make a valid Windows filename from an arbitrary string?
...n are invalid). Be careful when naming files with ".", for example:
echo "test" > .test.
Will generate a file named ".test"
Lastly, if you really want to do things correctly, there are some special file names you need to look out for. On Windows you can't create files named:
CON, PRN, AUX, ...
TypeError: 'str' does not support the buffer interface
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I tested it with ActiveState Python 3.1 and 3.2. On my machine it works in both.
– Michał Niklas
Mar 29 '11 at 11:21
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Prevent automatic browser scroll on refresh
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Tested on Chrome 36, Firefox 30 and IE 11. Works very well!
– Fizzix
Aug 7 '14 at 1:46
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