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conditional unique constraint
... constraint like this. The difference is, you'll return false if Status = 1 and Count > 0.
http://msdn.microsoft.com/en-us/library/ms188258.aspx
CREATE TABLE CheckConstraint
(
Id TINYINT,
Name VARCHAR(50),
RecordStatus TINYINT
)
GO
CREATE FUNCTION CheckActiveCount(
@Id INT
) RETURNS I...
warning: [options] bootstrap class path not set in conjunction with -source 1.5
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102
From a blog post:
To use javac from JDK N to cross-compiler to an older platform version, ...
How do I compute derivative using Numpy?
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143
You have four options
Finite Differences
Automatic Derivatives
Symbolic Differentiation
Com...
How do I list all cron jobs for all users?
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1149
You would have to run this as root, but:
for user in $(cut -f1 -d: /etc/passwd); do crontab ...
How to express infinity in Ruby?
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188
If you use ruby 1.9.2, you can use:
>> Float::INFINITY #=> Infinity
>> 3 < ...
How do you change the size of figures drawn with matplotlib?
...
17 Answers
17
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How can I pass a member function where a free function is expected?
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146
There isn't anything wrong with using function pointers. However, pointers to non-static membe...