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How do I give text or an image a transparent background using CSS?
...r: rgba(255, 0, 0, 0.5);
Here's an article from css3.info, Opacity, RGBA and compromise (2007-06-03).
<p style="background-color: rgba(255, 0, 0, 0.5);">
<span>Hello, World!</span>
</p>
...
Making Python loggers output all messages to stdout in addition to log file
...
All logging output is handled by the handlers; just add a logging.StreamHandler() to the root logger.
Here's an example configuring a stream handler (using stdout instead of the default stderr) and adding it to the root logger:
import logging
imp...
How do I create a variable number of variables?
...u can use dictionaries to accomplish this. Dictionaries are stores of keys and values.
>>> dct = {'x': 1, 'y': 2, 'z': 3}
>>> dct
{'y': 2, 'x': 1, 'z': 3}
>>> dct["y"]
2
You can use variable key names to achieve the effect of variable variables without the security ris...
How to count lines of Java code using IntelliJ IDEA?
...
File - Settings - Plugins - Browse repositories... Find it on the list and double-click on it.
Open statistics window from:
View -> Tool Windows -> Statistic
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How to determine total number of open/active connections in ms sql server 2005
... sys.sysprocesses
WHERE
dbid > 0
GROUP BY
dbid, loginame
And this gives the total:
SELECT
COUNT(dbid) as TotalConnections
FROM
sys.sysprocesses
WHERE
dbid > 0
If you need more detail, run:
sp_who2 'Active'
Note: The SQL Server account used needs the 'sysadmin...
Ruby 'require' error: cannot load such file
...
I just tried and it works with require "./tokenizer". Hope this helps.
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SQL Update with row_number()
...swered Nov 30 '12 at 21:48
Aleksandr FedorenkoAleksandr Fedorenko
14.5k66 gold badges3131 silver badges4040 bronze badges
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SQL is null and = null [duplicate]
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In SQL, a comparison between a null value and any other value (including another null) using a comparison operator (eg =, !=, <, etc) will result in a null, which is considered as false for the purposes of a where clause (strictly speaking, it's "not true", rather...
How to swap keys and values in a hash
How do I swap keys and values in a Hash?
6 Answers
6
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Resolve build errors due to circular dependency amongst classes
...t this is to "think like a compiler".
Imagine you are writing a compiler. And you see code like this.
// file: A.h
class A {
B _b;
};
// file: B.h
class B {
A _a;
};
// file main.cc
#include "A.h"
#include "B.h"
int main(...) {
A a;
}
When you are compiling the .cc file (remember that th...