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How do I determine which iOS SDK I have?
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154
If you type this:
$> xcodebuild -showsdks
it gives something like this:
$> OS X SDKs...
T-SQL stored procedure that accepts multiple Id values
...skog has maintained the authoritative answer to this question for the last 16 years: Arrays and Lists in SQL Server.
There are at least a dozen ways to pass an array or list to a query; each has their own unique pros and cons.
Table-Valued Parameters. SQL Server 2008 and higher only, and probabl...
Set custom attribute using JavaScript
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Use the setAttribute method:
document.getElementById('item1').setAttribute('data', "icon: 'base2.gif', url: 'output.htm', target: 'AccessPage', output: '1'");
But you really should be using data followed with a dash and with its property, like:
<li ... data-icon="base.gif" ......
What is the right way to check for a null string in Objective-C?
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edited Nov 5 '14 at 3:14
answered Jun 10 '09 at 7:45
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Implementing slicing in __getitem__
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121
The __getitem__() method will receive a slice object when the object is sliced. Simply look at...
How to convert a negative number to positive?
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216
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) ...
How do I add more members to my ENUM-type column in MySQL?
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140
ALTER TABLE
`table_name`
MODIFY COLUMN
`column_name2` enum(
'existing_value1',...
What do you call the -> operator in Ruby?
... lambda defined using -> is called lambda literal.
succ = ->(x){ x+1 }
succ.call(2)
The code is equivalent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal.
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Why do we need argc while there is always a null at the end of argv?
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106
Yes, argv[argc]==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If t...