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SQLAlchemy: What's the difference between flush() and commit()?
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Just one more thing: do you know whether calling commit() increases the memory used, or decreases it?
– AP257
Nov 17 '10 at 7:07
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Check if current directory is a Git repository
...ld either wrap that in a function or use it in a script.
Condensed into a one line condition suitable for bash and zsh
[ -d .git ] && echo .git || git rev-parse --git-dir > /dev/null 2>&1
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Override intranet compatibility mode IE8
...n't acknowledge the meta header and just uses the browser setting. Does anyone know how to disable this?
19 Answers
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When should I use h:outputLink instead of h:commandLink?
...ty of the target page when the link is actually clicked (the URL won't be "one behind" anymore), but it doesn't change the href of the <a> element to be a fullworthy URL. It still remains #.
<h:form>
<h:commandLink value="link text" action="destination?faces-redirect=true" />
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What is the purpose of “!” and “?” at the end of method names?
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One important note is that you should only have a bang method if you also have a corresponding non-bang method. The bang is used to distinguish the "more surprising" version of the method from the "less surprising" one. If yo...
Multiple commands in an alias for bash
...ately, but your example looks like the second command depends on the first one being exiting successfully. You may want to try a short-circuit evaluation in your alias:
alias lock='gnome-screensaver && gnome-screensaver-command --lock'
Now the second command will not even be attempted ...
How to generate random number in Bash?
...ou specify shuf -i 1-10 -n 10 you will get all numbers from 1 to 10 exactl one. If you specify -n 15 you will still get only those 10 numbers exactly once. That is really only shuffling, not generating random numbers.
– radlan
Apr 27 at 13:00
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Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
...lhost forces psql to use TCP/IP. Setting an environment variable PGHOST is one of the ways to achieve that. It's documented in psql's manual.
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Converting a string to int in Groovy
...e = number as Integer
}
Deprecation Update
In recent versions of Groovy one of the toInteger() methods has been deprecated. The following is taken from org.codehaus.groovy.runtime.StringGroovyMethods in Groovy 2.4.4
/**
* Parse a CharSequence into an Integer
*
* @param self a CharSequence
*...
Unresolved Import Issues with PyDev and Eclipse
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One other point to note - Eclipse may need to be restarted for this to work. This only seems to work via "File -> Restart" and not by closing and reopening manually.
– soulBit
May 11 ...