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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...
Packing NuGet projects compiled in release mode?
Is there some way to make a NuGet package using code compiled in release mode? Or is there some reason I should only publish (make available locally, in this case) packages compiled in debug mode?
...
Should a function have only one return statement?
...evitably wind up with code that looks like this:
function()
{
HRESULT error = S_OK;
if(SUCCEEDED(Operation1()))
{
if(SUCCEEDED(Operation2()))
{
if(SUCCEEDED(Operation3()))
{
if(SUCCEEDED(Operation4()))
{
...
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()
...
Simpler way to put PDB breakpoints in Python code?
Just a convenience question. I've been a bit spoiled with debuggers in IDEs like Visual Studio and XCode. I find it a bit clumsy to have to type import pdb; pdb.set_trace() to set a breakpoint (I'd rather not import pdb at the top of the file as I might forget and leave it in).
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How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
Is there a function in PHP that can decode Unicode escape sequences like " \u00ed " to " í " and all other similar occurrences?
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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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What does “The APR based Apache Tomcat Native library was not found” mean?
...
+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 make MySQL handle UTF-8 properly
...ne of the responses to a question I asked yesterday suggested that I should make sure my database can handle UTF-8 characters correctly. How I can do this with MySQL?
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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...