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Live-stream video from one android phone to another over WiFi
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Quick sample code for the server:
// this is your network socket
ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(socket);
mCamera = getCameraInstance();
mMediaRecorder = new MediaRecorder();
mCamera.unlock();
mMediaRecorder.setCamera(mCamera);
mMediaRecorder.setAudioSource(MediaRecord...
How to make --no-ri --no-rdoc the default for gem install?
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You just add the following line to your local ~/.gemrc file (it is in your home folder):
gem: --no-document
or you can add this line to the global gemrc config file.
Here is how to find it (in Linux):
strace gem source 2>&1 | grep gemrc
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How do you add Boost libraries in CMakeLists.txt?
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Put this in your CMakeLists.txt file (change any options from OFF to ON if you want):
set(Boost_USE_STATIC_LIBS OFF)
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost 1.45.0 COMPONENTS *boost libraries here*)
if(Boo...
Is it pythonic to import inside functions?
...un I think you'll appreciate having most of your imports at the top of the file, that way you can tell at a glance how complicated your module is by what it needs to import.
If I'm adding new code to an existing file I'll usually do the import where it's needed and then if the code stays I'll make ...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...acle listener service. Now all is well.
For example, your listener.ora file might initially look like:
# listener.ora Network Configuration File: C:\app\oracle_user\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
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fatal: 'origin' does not appear to be a git repository
....gitconfig is your global config for git.
There are three levels of config files.
cat $(git rev-parse --show-toplevel)/.git/config
(mentioned by bereal) is your local config, local to the repo you have cloned.
you can also type from within your repo:
git remote -v
And see if there is any rem...
What is the second parameter of NSLocalizedString()?
...econd parameter is a comment that will automatically appear in the strings file if you use the genstrings command-line utility, which can create the strings file for you by scanning your source code.
The comment is useful for your localizers. For example:
NSLocalizedString(@"Save",@"Title of the S...
Can the Unix list command 'ls' output numerical chmod permissions?
...s to recognize bits t and s. You should use the 'stat' command to get the file permission information. Calculating it by hand will lead to errors!
– Evan Langlois
Nov 9 '15 at 6:28
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Best way to simulate “group by” from bash?
Suppose you have a file that contains IP addresses, one address in each line:
14 Answers
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Select unique or distinct values from a list in UNIX shell script
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With zsh you can do this:
% cat infile
tar
more than one word
gz
java
gz
java
tar
class
class
zsh-5.0.0[t]% print -l "${(fu)$(<infile)}"
tar
more than one word
gz
java
class
Or you can use AWK:
% awk '!_[$0]++' infile
tar
more than one word
gz
java...