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How to set HTTP headers (for cache-control)?
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You can set the headers in PHP by using:
<?php
//set headers to NOT cache a page
header("Cache-Control: no-cache, must-revalidate"); //HTTP 1.1
header("Pragma: no-cache"); //HTTP 1.0
header("Expires: Sat, 26 Jul 1997 05:0...
postgres: upgrade a user to be a superuser?
...SER myuser WITH NOSUPERUSER;"
To prevent a command from logging when you set password, insert a whitespace in front of it, but check that your system supports this option.
$ sudo -u postgres psql -c "CREATE USER my_user WITH PASSWORD 'my_pass';"
$ sudo -u postgres psql -c "CREATE USER my_user...
How to alias 'git checkout' to 'git co'
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simply to add some comments, the bash alias is for setting alias for a command, and the co or checkout is the parameter or flag to the command git, so it won't work.
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What does mc:Ignorable=“d” mean in WPF?
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mc:Ignorable="d" sets d: prefix as a mark for attributes used in design. Read more on MSDN: mc:Ignorable Attribute
d:DesignHeight="500" and d:DesignWidth="300" use that d: prefix, what makes them available only during design time - they are ...
Valid values for android:fontFamily and what they map to?
...definitive and ever-expanding list of Android fonts.
Using these fonts
Set the android:fontFamily and android:textStyle attributes, e.g.
<!-- Roboto Bold -->
<TextView
android:fontFamily="sans-serif"
android:textStyle="bold" />
to the desired values from this table:
Font ...
How to subtract 2 hours from user's local time?
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Subtract from another date object
var d = new Date();
d.setHours(d.getHours() - 2);
Complete reference list for Date object
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What is .sln.docstates file created by Visual Studio Productivity Power Tools?
...e
hidden .suo file but we
had to move it to a separate file to
fix a set of crashing bugs (timing
issues). In the next release of the
Power Tools we will hide this file by
default.
http://visualstudiogallery.msdn.microsoft.com/d0d33361-18e2-46c0-8ff2-4adea1e34fef/ (Q&A tab, "Is .sl...
What is a “cache-friendly” code?
... cost. The idea is that most of the executing code will be hitting a small set of variables often, and the rest (a much larger set of variables) infrequently. If the processor can't find the data in L1 cache, then it looks in L2 cache. If not there, then L3 cache, and if not there, main memory. Each...
What are the undocumented features and limitations of the Windows FINDSTR command?
...e format of matching line output is as follows:
filename:lineNumber:lineOffset:text
where
fileName: = The name of the file containing the matching line. The file name is not printed if the request was explicitly for a single file, or if searching piped input or redirected input. When printed, the fi...
What does the forward slash mean in the CSS font shorthand?
...to the following:
font-size: 12px;
line-height: 18px;
As always, if you set the line height to a relative value (e.g. percentage or ems), it's calculated relative to the font size.
W3C CSS2.1 font property reference
W3C CSS3 Fonts Module font property reference (the syntax carries over from CSS2...