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[ :Unexpected operator in shell programming [duplicate]
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There is no mistake in your bash script. But you are executing it with sh which has a less extensive syntax ;)
So, run bash ./choose.sh instead :)
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Objective-C ARC: strong vs retain and weak vs assign
There are two new memory management attributes for properties introduced by ARC, strong and weak .
8 Answers
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SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
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update q
set q.QuestionID = a.QuestionID
from QuestionTrackings q
inner join QuestionAnswers a
on q.AnswerID = a.AnswerID
where q.QuestionID is null -- and other conditions you might want
I recommend to check what the result set to update is before running the update (same query, j...
How to check a not-defined variable in JavaScript
I wanted to check whether the variable is defined or not. For example, the following throws a not-defined error
14 Answer...
What is LINQ and what does it do? [closed]
What is LINQ? I know it's for databases, but what does it do?
7 Answers
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Are members of a C++ struct initialized to 0 by default?
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They are not null if you don't initialize the struct.
Snapshot s; // receives no initialization
Snapshot s = {}; // value initializes all members
The second will make all members zero, the first leaves them at unspecified values. Note that it is recurs...
SQL SELECT speed int vs varchar
I'm in the process of creating a table and it made me wonder.
9 Answers
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Why are interface variables static and final by default?
Why are interface variables static and final by default in Java?
15 Answers
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adding and removing classes in angularJs using ng-click
I am trying to work how to add a class with ngClick. I have uploaded up my code onto plunker Click here . Looking at the angular documentation i can't figure out the exact way it should be done. Below is a snippet of my code. Can someone guide me in the right direction
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
I'm running a PHP script and continue to receive errors like:
28 Answers
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