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Why should I use 'li' instead of 'div'?
...xpress lists of things, and it helps the Google robot, screen readers, and all manner of users who don't care solely about the presentation of the site understand your content better.
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improv...
How to filter files when using scp to copy dir recursively?
I need to copy all the .class files from server to local with all dir reserved. e.g. server:/usr/some/unknown/number/of/sub/folders/me.class will be /usr/project/backup/some/unknown/number/of/sub/folders/me.class the problem is, there are many other useless files such as .svn-base files that i d...
INSTALL_FAILED_UPDATE_INCOMPATIBLE when I try to install compiled .apk on device
I've compiled Trebuchet launcher from CyanogenMod 9, and trying to install it with adb:
29 Answers
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How to find first element of array matching a boolean condition in JavaScript?
... var result = null;
arr.some(function(el, i) {
return test.call(ctx, el, i, arr) ? ((result = el), true) : false;
});
return result;
}
var result = find(someArray, isNotNullNorUndefined);
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Secure hash and salt for PHP passwords
It is currently said that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection.
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Configuring Log4j Loggers Programmatically
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You can add/remove Appender programmatically to Log4j:
ConsoleAppender console = new ConsoleAppender(); //create appender
//configure the appender
String PATTERN = "%d [%p|%c|%C{1}] %m%n";
console.setLayout(new PatternLayout(PATTERN));
console.setThresh...
MySQL, update multiple tables with one query
...ookID is very important, without it The Books table update would happen to all rows and not only for the row with the specified id. Some lessons are learned the hard way, this one was learned in the terrifing way.
– nheimann1
Mar 24 '15 at 15:06
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Should I instantiate instance variables on declaration or in the constructor?
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There is no difference - the instance variable initialization is actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constru...
Postgresql - change the size of a varchar column to lower length
I have a question about the ALTER TABLE command on a really large table (almost 30 millions rows).
One of its columns is a varchar(255) and I would like to resize it to a varchar(40) .
Basically, I would like to change my column by running the following command:
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App.Config Transformation for projects which are not Web Projects in Visual Studio?
... transform a web.config, but
while they feels intuitively right it's actually very verbose.
Here's two transforms, one using XSLT and the same one using the XML
Document Transform syntax/namespace. As with all things there's
multiple ways in XSLT to do this, but you get the general idea. ...