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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
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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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Getting pids from ps -ef |grep keyword
I want to use ps -ef | grep "keyword" to determine the pid of a daemon process (there is a unique string in output of ps -ef in it).
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What is the difference between double-ampersand (&&) and semicolon (;) in Linux Bash?
What is the difference between ampersand and semicolon in Linux Bash ?
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Why prefer two's complement over sign-and-magnitude for signed numbers?
I'm just curious if there's a reason why in order to represent -1 in binary, two's complement is used: flipping the bits and adding 1?
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SQL standard to escape column names?
Is there a SQL standard to escape a column name? If not what works for MySQL and SQLite? does it also work for SQL Server?
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OSGi: What are the differences between Apache Felix and Apache Karaf?
Apache Karaf is a sub project of Apache Felix . It is defined as "a lightweight OSGi container".
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Measure and Benchmark Time for Ruby Methods
How can i measure the time taken by a method and the individual statements in that method in Ruby. If you see the below method i want to measure the total time taken by the method and the time taken for database access and redis access. I do not want to write Benchmark.measure before every statement...
What is the AppDelegate for and how do I know when to use it?
I'm just beginning to work on iPhone apps. How do I know when I should be putting stuff in AppDelegate versus a custom class? Is there a rule or any type of analogy with another programming language like Python or PHP that uses an AppDelegate like pattern?
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