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How to document Ruby code?
...es handlers for stdout and stderr
# Params:
# +command+:: command line string to be executed by the system
# +outhandler+:: +Proc+ object that takes a pipe object as first and only param (may be nil)
# +errhandler+:: +Proc+ object that takes a pipe object as first and only param (may be nil)...
Foreign Key to multiple tables
...bo.Ticket
(
ID int NOT NULL,
Owner_ID int NOT NULL,
Owner_Type string NOT NULL, -- In our example, this would be "User" or "Group"
Subject varchar(50) NULL
)
With the above method, you could add as many Owner Types as you want. Owner_ID would not have a foreign key constraint but ...
Adding a new SQL column with a default value
...t_value]
[AUTO_INCREMENT] [UNIQUE [KEY] | [PRIMARY] KEY]
[COMMENT 'string']
[COLUMN_FORMAT {FIXED|DYNAMIC|DEFAULT}]
[STORAGE {DISK|MEMORY|DEFAULT}]
[reference_definition]
Notice the word DEFAULT there.
...
jQuery & CSS - Remove/Add display:none
...line "display:none" via jQuery's css-api is by resetting it with the empty string (null does NOT work btw!!).
According to the jQuery docu this is the general way to "remove" a once set inline style property.
$("#mydiv").css("display","");
or
$("#mydiv").css({display:""});
should do the trick p...
How do I check if a SQL Server text column is empty?
... Field), '') = '' is even better ;-), if you feel that " " is an Empty string even with spaces inside
– Kirsten
Jun 13 '19 at 7:26
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How do I read the first line of a file using cat?
... IFS prevents leading and trailing whitespace from being stripped from the string that's read.
– Charles Duffy
May 24 '18 at 15:39
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Which version of CodeIgniter am I currently using?
...p file and you can see the constant
/**
* CodeIgniter Version
*
* @var string
*
*/
const CI_VERSION = '3.1.6';
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How to find out if a file exists in C# / .NET?
I would like to test a string containing a path to a file for existence of that file (something like the -e test in Perl or the os.path.exists() in Python) in C#.
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How can I account for period (AM/PM) using strftime?
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Which is great unless your time strings have 0.00pm, (%I starts at 1) !!
– Andy Hayden
Apr 20 '15 at 23:10
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Find file name from full file path
...he file full path (part of a file path) without the hassle of manipulating string?
2 Answers
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