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What characters are allowed in DOM IDs? [duplicate]
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Actually there is a difference between HTML and XHTML.
As XHTML is XML the rules for XML IDs apply:
Values of type ID MUST match the Name production.
NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] |
[#xD8-...
How to do an instanceof check with Scala(Test)
...; replacing all JUnit tests with ScalaTests. At one point, I want to check if Guice's Injector injects the correct type. In Java, I have a test like this:
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Trim trailing spaces in Xcode
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We now have some basic Xcode 4 support. See our new plugin
– dmaclach
Nov 13 '11 at 5:48
1
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MySql server startup error 'The server quit without updating PID file '
...r_computer_name.local.err
It's probably problem with permissions
check if any mysql instance is running
ps -ef | grep mysql
if yes, you should stop it, or kill the process
kill -9 PID
where PID is the number displayed next to username on output of previous command
check ownership of...
How to initialize a two-dimensional array in Python?
...t comprehension:
x = [[foo for i in range(10)] for j in range(10)]
# x is now a 10x10 array of 'foo' (which can depend on i and j if you want)
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Rails :include vs. :joins
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.joins will just joins the tables and brings selected fields in return. if you call associations on joins query result, it will fire database queries again
:includes will eager load the included associations and add them in memory. :includes loads all the included tables attributes. If you call ...
Facebook share link without JavaScript
...gs e)
{
var referer = Request.UrlReferrer.ToString();
if(string.IsNullOrEmpty(referer))
{
// some error logic
return;
}
Response.Clear();
Response.Redirect("https://www.facebook.com/sharer/sharer.php?u=" + HttpUtility.UrlE...
Detect if stdin is a terminal or pipe?
...at test.cc | ./test /dev/tty OK NO S_ISFIFO
echo ./test | at now /dev/tty FAIL NO S_ISREG
The results are from a Ubuntu Linux 11.04 system using following program:
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#i...
How to duplicate object properties in another object?
...le:
Object.assign(secondObject, firstObject);
That's it!
Support right now is obviously poor; only Firefox (34+) supports it out-of-the-box, while Chrome (45+) and Opera (32+) require the 'experimental flag' to be set.
Support is improving, with the lastest versions of Chrome, Firefox, Opera, S...
What do the python file extensions, .pyc .pyd .pyo stand for?
...nput source code that you've written.
.pyc: This is the compiled bytecode. If you import a module, python will build a *.pyc file that contains the bytecode to make importing it again later easier (and faster).
.pyo: This was a file format used before Python 3.5 for *.pyc files that were created wi...