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Default filter in Django admin

...ch has three values: activate , pending and rejected . When I use list_filter in Django admin, the filter is by default set to 'All' but I want to set it to pending by default. ...
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Create singleton using GCD's dispatch_once in Objective-C

...er here: instancetype + (instancetype)sharedInstance { static dispatch_once_t once; static id sharedInstance; dispatch_once(&once, ^ { sharedInstance = [self new]; }); return sharedInstance; } + (Class*)sharedInstance { static dispatch_once_t once; ...
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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

...ssembly from gcc-4.6.4 -Os (executes in 0.709 secs): 00000000004004d2 <_ZL3addRKiS0_.isra.0>: 4004d2: 8d 04 37 lea eax,[rdi+rsi*1] 4004d5: c3 ret 00000000004004d6 <_ZL4workii>: 4004d6: 41 55 push r13 4...
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Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error

...uild Setting -> Linking -> Other Linker Flags -> Add -lLibraryName_$(PLATFORM_NAME)d for Debug, and add -lLibraryName_$(PLATFORM_NAME) for Release – George Nov 3 '13 at 15:55 ...
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Get $_POST from multiple checkboxes

... Set the name in the form to check_list[] and you will be able to access all the checkboxes as an array($_POST['check_list'][]). Here's a little sample as requested: <form action="test.php" method="post"> <input type="checkbox" name="check_list...
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?

...le,move]. Notice that fillAfter(true) is not used anywhere. View2 is right_of View1 and View3 is right_of View2 Having set these rules RelativeLayout takes care of everything else. Animations alter the margins (on move) and [width,height] on scale To access each child (so that you can inflat...
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?

...dards and trying to implement new and useful methods. Earlier I was using __autoload just to escape including multiple files on each page, but recently I have seen a tip on __autoload manual ...
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Timeout for python requests.get entire response

...snippet will work for you: import requests import eventlet eventlet.monkey_patch() with eventlet.Timeout(10): requests.get("http://ipv4.download.thinkbroadband.com/1GB.zip", verify=False) share | ...
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Should you always favor xrange() over range()?

...kipping implicit fixer: idioms RefactoringTool: Skipping implicit fixer: ws_comma --- range_test.py (original) +++ range_test.py (refactored) @@ -1,7 +1,7 @@ for x in range(20): - a=range(20) + a=list(range(20)) b=list(range(20)) c=[x for x in range(20)] d=(x for x in range(20...
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top -c command in linux to filter processes listed based on processname

... to get pid's of matching command lines: top -c -p $(pgrep -d',' -f string_to_match_in_cmd_line) top -p expects a comma separated list of pids so we use -d',' in pgrep. The -f flag in pgrep makes it match the command line instead of program name. ...