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What does -D_XOPEN_SOURCE do/mean?
...erent versions of the standard.
500 - X/Open 5, incorporating POSIX 1995
600 - X/Open 6, incorporating POSIX 2004
700 - X/Open 7, incorporating POSIX 2008
You can tell which one you need (if any) by looking at the man page for each function you call.
For example, man strdup says:
Feature Te...
Merge cells using EPPlus?
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165
You have to use it like this:
ws.Cells["A1:C1"].Merge = true;
instead of:
using (ExcelRange...
validation custom message for rails 3
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196
Try this
validates :title, presence: { message: "Story title is required" }
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Difference between @OneToMany and @ElementCollection?
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6 Answers
6
Active
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How can I tell AngularJS to “refresh”
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answered Sep 6 '12 at 17:09
DustinDustin
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Virtualizing an ItemsControl?
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answered May 6 '10 at 20:25
DavidNDavidN
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How can I change UIButton title color?
..... :(
– Supertecnoboff
Jul 7 '15 at 6:40
How about with RGB ?
– Umit Kaya
Mar 1...
ASP.NET MVC return empty view
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archilarchil
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How to implement a unique index on two columns in rails
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186
add_index :subscriptions, [:user_id, :content_id], unique: true
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