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How to determine the screen width in terms of dp or dip at runtime in Android?
... widgets using dip/dp (in java files). At runtime if I code,
int pixel=this.getWindowManager().getDefaultDisplay().getWidth() ;
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Selecting/excluding sets of columns in pandas [duplicate]
I would like to create views or dataframes from an existing dataframe based on column selections.
9 Answers
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“Git fatal: ref HEAD is not a symbolic ref” while using maven release plugin
...e -DreleaseVersion=1.1.2 -DdevelopmentVersion=1.2.0-SNAPSHOT -Dtag=v1.1.2 -X from an Atlassian Bamboo plan. However doing the same in the command line works fine. The full error stack is below.
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Context switches much slower in new linux kernels
...ys/devices/system/cpu/cpuidle/current_driver
If you want your modern Linux OS to have the lowest context switch latency possible, add the following kernel boot parameters to disable all of these power saving features:
On Ubuntu 12.04, you can do this by adding them to the GRUB_CMDLINE_LINUX_DEFAU...
How can I generate a list of files with their absolute path in Linux?
... the current directory:
find "$(pwd)" -name .htaccess
or if your shell expands $PWD to the current directory:
find "$PWD" -name .htaccess
find simply prepends the path it was given to a relative path to the file from that path.
Greg Hewgill also suggested using pwd -P if you want to resolve ...
What's the opposite of head? I want all but the first N lines of a file
Given a text file of unknown length, how can I read, for example all but the first 2 lines of the file? I know tail will give me the last N lines, but I don't know what N is ahead of time.
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Camera access through browser
...oose either to take a picture or to upload one from your album i.e.
An example can be found here:
Capturing camera/picture data without PhoneGap
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How connect Postgres to localhost server using pgAdmin on Ubuntu?
...re on opensuse the postgres user password is not blank, but undefined (an exclamation mark in /etc/shadow). No password login possible.
– Str.
Jul 23 '14 at 21:16
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How do I get ruby to print a full backtrace instead of a truncated one?
When I get exceptions, it is often from deep within the call stack. When this happens, more often than not, the actual offending line of code is hidden from me:
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