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Postgres DB Size Command
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You can enter the following psql meta-command to get some details about a specified database, including its size:
\l+ <database_name>
And to get sizes of all databases (that you can connect to):
\l+
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Version of SQLite used in Android?
...2.0:
29-10.0-Q (Revision 8 in SDK Manager)
28-9.0-P
SQLite 3.19.4 (for some reason 3.19.4 does not exist in sqlite release notes! so linking to version control check-ins instead):
27-8.1.0-O MR1
SQLite 3.18.2:
26-8.0.0-O (note: O beta versions used 3.18.0)
SQLite 3.9.2:
25-7.1.1-N MR1
24-7.0-...
Grabbing the href attribute of an A element
... for HTML are difficult. Here is how to do it with DOM:
$dom = new DOMDocument;
$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('a') as $node) {
echo $dom->saveHtml($node), PHP_EOL;
}
The above would find and output the "outerHTML" of all A elements in the $html string.
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Android SDK Manager Not Installing Components
... right-clicking on the .exe and selecting "Run As Administrator".
Also, some anti-virus programs have been known to interfere with SDK Manager.
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start MySQL server from command line on Mac OS Lion
...ll)
You can also add these to your bash startup scripts:
export MYSQL_HOME=/usr/local/mysql
alias start_mysql='sudo $MYSQL_HOME/bin/mysqld_safe &'
alias stop_mysql='sudo $MYSQL_HOME/bin/mysqladmin shutdown'
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Referring to a Column Alias in a WHERE Clause
...ire SELECT including aliases, is applied after the WHERE clause.)
But, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with parenthesis to force logical order of operation or with a Common Table Expression (CTE):
Parenthe...
In Android EditText, how to force writing uppercase?
...set all other attributes which were set via XML (i.e. maxLines, inputType,imeOptinos...). To prevent this, add you Filter(s) to the already existing ones.
InputFilter[] editFilters = <EditText>.getFilters();
InputFilter[] newFilters = new InputFilter[editFilters.length + 1];
System.arraycopy(...
Quick unix command to display specific lines in the middle of a file?
... an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!)
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How to check if a file is empty in Bash?
I have a file called diff.txt. Want to check if it is empty. Did something like this but couldn't get it working.
10 Answe...
Good examples of MVVM Template
...doing things. First, you might want to get familiar with one of the app frameworks out there (Prism is a decent choice), because they provide you with convenient tools like dependency injection, commanding, event aggregation, etc to easily try out different patterns that suit you.
The prism releas...