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How to check whether a variable is a class or not?
I was wondering how to check whether a variable is a class (not an instance!) or not.
9 Answers
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What does “program to interfaces, not implementations” mean?
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edited Dec 28 '19 at 9:48
Hesham Massoud
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answered ...
Design patterns or best practices for shell scripts [closed]
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answered Apr 10 '09 at 22:14
Stefano BoriniStefano Borini
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Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
When building a Java 8 project with Maven:
8 Answers
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How to take backup of a single table in a MySQL database?
By default, mysqldump takes the backup of an entire database. I need to backup a single table in MySQL. Is it possible? How do I restore it?
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What are CN, OU, DC in an LDAP search?
I have a search query in LDAP like this. What exactly does this query mean?
3 Answers
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Is there a shortcut to make a block comment in Xcode?
I'm writing ANSI-compatible C code, and hence I can't use the line ( // ) comment. I'm using Xcode. In Sublime Text and Eclipse, and I think most other IDEs, there are separate keyboard shortcuts for line comments and block comments ( /**/ ). However, I don't see that in Xcode - in fact, I don't eve...
How do we control web page caching, across all browsers?
...heoretically omit Cache-Control too and rely on Expires only.
Date: Wed, 24 Aug 2016 18:32:02 GMT
Expires: 0
But that may fail if e.g. the end-user manipulates the operating system date and the client software is relying on it.
Other Cache-Control parameters such as max-age are irrelevant if the...
C# namespace alias - what's the point?
Where or when would one would use namespace aliasing like
11 Answers
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Exception handling in R [closed]
Does anyone have examples/tutorials of exception handling in R? The official documentation is very terse.
5 Answers
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