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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
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How do you skip a unit test in Django?
How do forcibly skip a unit test in Django?
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“Insert if not exists” statement in SQLite
I have an SQLite database. I am trying to insert values ( users_id , lessoninfo_id ) in table bookmarks , only if both do not exist before in a row.
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How to move a git repository into another directory and make that directory a git repository?
I have a directory gitrepo1 . This directory is a git repository.
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Aligning UIToolBar items
I have three UIBarButtonItem created as below. They align left and I'd like to align center so there isn't a gap on the right side. I don't see an align property on UIToolBar . Is there another way to accomplish this?
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_=> what does this underscore mean in Lambda expressions?
What does an lambda expression like _=> expr mean?
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How to list all installed packages and their versions in Python?
Is there a way in Python to list all installed packages and their versions?
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How to access a preexisting collection with Mongoose?
I have a large collection of 300 question objects in a database test . I can interact with this collection easily through MongoDB's interactive shell; however, when I try to get the collection through Mongoose in an express.js application I get an empty array.
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Naming convention for unique constraint
Naming conventions are important, and primary key and foreign key have commonly used and obvious conventions ( PK_Table and FK_Table_ReferencedTable , respectively). The IX_Table_Column naming for indexes is also fairly standard.
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PhpStorm wrap/surround selection?
Often in coding and templating I need to wrap a certain part of text. Is there any shortcut to wrap the current selection, for example:
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