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Log all queries in mysql
...
or place the following in your my.cnf file:
log = log_file_name
Either one will log all queries to log_file_name.
You can also log only slow queries using the --log-slow-queries option instead of --log. By default, queries that take 10 seconds or longer are considered slow, you can change this...
Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
...itaker: it's Enumerable.Empty<T> not Enumerable<T>.Empty (that one drove me crazy once...)
– santa
Apr 11 '14 at 11:49
1
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How do I get bit-by-bit data from an integer value in C?
...g the desired bit into the least significant bit position, masking can be done with 1. No need to compute a new mask value for each bit.
(n >> k) & 1
As a complete program, computing (and subsequently printing) an array of single bit values:
#include <stdio.h>
#include <stdlib...
What is the difference between static_cast and C style casting?
...ammer more clearly.
When writing C++ I'd pretty much always use the C++ ones over the the C style.
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MySQL: Fastest way to count number of rows
...reat question, great answers. Here's a quick way to echo the results if anyone is reading this page and missing that part:
$counter = mysql_query("SELECT COUNT(*) AS id FROM table");
$num = mysql_fetch_array($counter);
$count = $num["id"];
echo("$count");
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pandas: filter rows of DataFrame with operator chaining
...st line of code does not help either, but anyway:
"Chained" filtering is done by "chaining" the criteria in the boolean index.
In [96]: df
Out[96]:
A B C D
a 1 4 9 1
b 4 5 0 2
c 5 5 1 0
d 1 3 9 6
In [99]: df[(df.A == 1) & (df.D == 6)]
Out[99]:
A B C D
d 1 3 9 6...
Change navbar color in Twitter Bootstrap
... 3.0.x
Available navbars
You've got two basic navbars:
<!-- A light one -->
<nav class="navbar navbar-default" role="navigation"></nav>
<!-- A dark one -->
<nav class="navbar navbar-inverse" role="navigation"></nav>
Default color usage
Here are the main col...
check android application is in foreground or not? [duplicate]
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@user370305's answer is error prone and discouraged by Android OS Developers (check https://groups.google.com/forum/#!msg/android-developers/zH-2bovZSLg/L2YM8Z1N-HwJ)
There is a much more simpler approach:
On a BaseActivity that all Activities extend:
pr...
Download JSON object as a file from browser
...r my application:
HTML:
<a id="downloadAnchorElem" style="display:none"></a>
JS (pure JS, not jQuery here):
var dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(storageObj));
var dlAnchorElem = document.getElementById('downloadAnchorElem');
dlAnchorEle...
Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)
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Thanks. Works in VS 2008 too. Also keep in mind that one can use %Id, %Ixand %IX too.
– c00000fd
Jul 12 '16 at 6:53
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