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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
...e of using the app this gets populated. Let's say somwhere, after an AJAX call or something i do this:
4 Answers
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Make $JAVA_HOME easily changable in Ubuntu [closed]
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A restart is still needed for these changes to affect apps launched through the Ubuntu UI (i.e. double clicking an app)
– Eric Hu
Feb 12 '13 at 3:15
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What is the difference between sigaction and signal?
...ion() avoids - unless you use the flags explicitly added to sigaction() to allow it to faithfully simulate the old signal() behaviour.
The signal() function does not (necessarily) block other signals from arriving while the current handler is executing; sigaction() can block other signals until the...
ImportError: No module named MySQLdb
I am referring the following tutorial to make a login page for my web application.
http://code.tutsplus.com/tutorials/intro-to-flask-signing-in-and-out--net-29982
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Utils to read resource text file to String (Java) [closed]
...useDelimiter("\\A").next();
Guys, don't use 3rd party stuff unless you really need that. There is a lot of functionality in the JDK already.
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importing pyspark in python shell
...d $SPARK_HOME/python/build to PYTHONPATH:
export SPARK_HOME=/Users/pzhang/apps/spark-1.1.0-bin-hadoop2.4
export PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/build:$PYTHONPATH
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What is the size of ActionBar in pixels?
...king in android version 2.3, but "R.attr.actionBarSize" is working android all version. just use "R.attr.actionBarSize" instead of "android.R.attr.actionBarSize" and etc.
– Nathaniel Jobs
May 20 '16 at 3:23
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Why does UITableViewCell remain highlighted?
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I prefer calling the deselectRowAtIndexPath in my viewDidAppear, if select the row brings up a new view.
– notnoop
Dec 3 '09 at 15:59
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Escape a string for a sed replace pattern
...capes themselves, forward slash for end of statement and & for replace all):
ESCAPED_REPLACE=$(printf '%s\n' "$REPLACE" | sed -e 's/[\/&]/\\&/g')
# Now you can use ESCAPED_REPLACE in the original sed statement
sed "s/KEYWORD/$ESCAPED_REPLACE/g"
If you ever need to escape the KEYWORD s...
How do I space out the child elements of a StackPanel?
...fine the type (e.g. TextBox)? If I try this using FrameworkElement so that all children are spaced, it has no effect.
– Jack Ukleja
Jan 28 '14 at 18:48
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