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Search and replace a line in a file in Python
I want to loop over the contents of a text file and do a search and replace on some lines and write the result back to the file. I could first load the whole file in memory and then write it back, but that probably is not the best way to do it.
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What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?
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SET XACT_ABORT ON instructs SQL Server to rollback the entire transaction and abort the batch when a run-time error occurs. It covers you in cases like a command timeout occurring on the client application rather than within SQL Server itself (which isn't covered by the default XACT_ABORT OFF setti...
Is the “struct hack” technically undefined behavior?
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It's not clear if it's legal or portable, but it is rather popular.
and:
... an official interpretation has deemed that it is not strictly conforming with the C Standard, although it does seem to work under all known implementations. (Compilers which check array bounds carefully might iss...
OSGi: What are the differences between Apache Felix and Apache Karaf?
...her features such as a console, an SSH remoting mechanism, a file deployer and more.
In this diagram of the Karaf architecture, Felix (or other OSGi implementation - currently Equinox is also supported) is the OSGi box, the other boxes are the features added by Karaf:
Therefore, unless you have ...
Remote Connections Mysql Ubuntu
... been unable to connect remotely to my MySQL server. I've tried everything and I'm still getting errors.
5 Answers
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PHP: If internet explorer 6, 7, 8 , or 9
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This is what I ended up using a variation of, which checks for IE8 and below:
if (preg_match('/MSIE\s(?P<v>\d+)/i', @$_SERVER['HTTP_USER_AGENT'], $B) && $B['v'] <= 8) {
// Browsers IE 8 and below
} else {
// All other browsers
}
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jquery live hover
...ery 1.4.1 now supports "hover" for live() events, but only with one event handler function:
$("table tr").live("hover",
function () {
});
Alternatively, you can provide two functions, one for mouseenter and one for mouseleave:
$("table tr").live({
mouseenter: function () {
},
mous...
List of all special characters that need to be escaped in a regex
...tml
You need to escape any char listed there if you want the regular char and not the special meaning.
As a maybe simpler solution, you can put the template between \Q and \E - everything between them is considered as escaped.
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Changing navigation bar color in Swift
...r?.tabBar.tintColor = UIColor.yellow
On the last two, replace brownColor and yellowColor with the color of your choice.
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How to get default gateway in Mac OSX
... when Time Warner's modem decided it wanted the IP my router used to have, and ifconfig lied about the gateway.
– Chris Doggett
Jun 20 '13 at 3:05
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