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Difference between res.send and res.json in Express.js
What is actual difference between res.send and res.json as both seems to perform same operation of responding to client.
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What is the use case of noop [:] in bash?
...o" != "1" ]
then
#echo Success
fi
Which causes bash to give a syntax error:
line 4: syntax error near unexpected token `fi'
line 4: `fi'
Bash can't have empty blocks (WTF). So you add a no-op:
if [ "$foo" != "1" ]
then
#echo Success
:
fi
or you can use the no-op to comment out...
How do I log ALL exceptions globally for a C# MVC4 WebAPI app?
... Service Layer for a client and I have been requested to catch and log all errors globally.
5 Answers
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How to create an empty file at the command line in Windows?
...one I use is basically the one by Nomad:
.>out.txt
It does give an error:
'.' is not recognized as an internal or external command
But this error is on stderr. And > only redirects stdout, where nothing have been produced.
Hence the creation of an empty file. The error message can be ...
What's the difference between subprocess Popen and call (how can I use them)?
I want to call an external program from Python. I have used both Popen() and call() to do that.
2 Answers
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SVN - Checksum mismatch while updating
When I try to update some files from Subversion, I get the error:
15 Answers
15
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Swift class introspection & generics
...ft class I tried...
class MyClass {
}
let MyClassRef = MyClass.self
// ERROR :(
let my_obj = MyClassRef()
Hmm… the error says:
Playground execution failed: error: :16:1: error: constructing an object of class type 'X' with a metatype value requires an '@required' initializer
Y().me()
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What does “The APR based Apache Tomcat Native library was not found” mean?
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+1 I was getting this error (posted by OP) only under Eclipse, eventhough it was fixed when i run it standalone (of course, after adding the native lib.) Thanks for the tip on setting the system property!
– asgs
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How to detect a loop in a linked list?
Say you have a linked list structure in Java. It's made up of Nodes:
25 Answers
25
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Why can't variables be declared in a switch statement?
...nswers.
However, in C language bypassing variable initialization is not an error. Jumping into the scope of a variable over its initialization is legal in C. It simply means that the variable is left uninitialized. The original code does not compile in C for a completely different reason. Label case...