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ALTER TABLE to add a composite primary key
I have a table called provider . I have three columns called person , place , thing . There can be duplicate persons, duplicate places, and duplicate things, but there can never be a dupicate person-place-thing combination.
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psql: FATAL: database “” does not exist
... it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
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Is there a “do … until” in Python? [duplicate]
...is is a similar construct, taken from the link above.
while True:
do_something()
if condition():
break
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Where are shared preferences stored?
...ces are stored in an xml file in the app data folder, i.e.
/data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PREFS_NAME.xml
or the default preferences at:
/data/data/YOUR_PACKAGE_NAME/shared_prefs/YOUR_PACKAGE_NAME_preferences.xml
SharedPreferences added during runtime are not stored in the Eclip...
AngularJS Multiple ng-app within a page
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So basically as mentioned by Cherniv we need to bootstrap the modules to have multiple ng-app within the same page. Many thanks for all the inputs.
var shoppingCartModule = angular.module("shoppingCart", [])
shoppingCartModule...
How to benchmark efficiency of PHP script
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If you actually want to benchmark real world code, use tools like Xdebug and XHProf.
Xdebug is great for when you're working in dev/staging, and XHProf is a great tool for production and it's safe to run it there (as long as you read t...
R cannot be resolved - Android error
I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it.
108 Answers
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“Collection was mutated while being enumerated” on executeFetchRequest
...nator:[self.managedObjectContext persistentStoreCoordinator]];
...in the _importData method (just before to register the controller as observer for the notification) solves the problem.
Thanks for your help, Peter. And thanks to Fred McCann's for its valuable blog post !
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Is there a way to only install the mysql client (Linux)?
...ll the server component as it will try to install mariadb: mariadb.x86_64 : A community developed branch of MySQL
– berniey
May 18 '16 at 21:08
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Getting a Custom Objects properties by string var [duplicate]
...something to work for nested objects and you can use lodash something like _.map([object], _.property(propertyPath))[0]; would work.
– bobwah
Mar 23 '17 at 10:24
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