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How to move one word left in the vi editor
I use the shortcut w to move the cursor one word right. Is there a shortcut to move a word left?
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Sending websocket ping/pong frame from browser
I keep reading about ping/pong messages in websockets to keep the connection alive, but I'm not sure what they are. Is it a distinct frame type? (I don't see any methods on a javascript WebSocket object in chrome related to ping-pong). Or is it just a design pattern (e.g. I literally send "ping" o...
Foreign Key to multiple tables
I've got 3 relevant tables in my database.
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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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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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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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Does the default constructor initialize built-in types?
Does the default constructor (created by the compiler) initialize built-in-types?
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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
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