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How to check if a table contains an element in Lua?
...mple:
function addToSet(set, key)
set[key] = true
end
function removeFromSet(set, key)
set[key] = nil
end
function setContains(set, key)
return set[key] ~= nil
end
There's a more fully-featured example here.
...
Mocking Extension Methods with Moq
...p://research.microsoft.com/en-us/projects/pex/downloads.aspx), a free tool from Microsoft that implements a different approach.
Here is the description of the tool:
Moles is a lightweight framework for test stubs and detours in .NET that is based on delegates.
Moles may be used to detour any .NET m...
How to close off a Git Branch?
... running git push origin :branchname. To fix a new issue later, branch off from master again.
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Why is Magento so slow? [closed]
...ayout tree) are huge. Also, unless caching is on, these tree are built up from files on disk and on each request.
Magento uses its configuration system to allow you to override classes. This is a powerful feature, but it means anytime a model, helper, or controller is instantiated, extra PHP instr...
C# equivalent of the IsNull() function in SQL Server
... in the right-hand operand position to a boolean variable. I had to change from this.BinaryExists = vModel.BinaryExists ?? 0; to this.BinaryExists = vModel.BinaryExists ?? false;.
– Kuyenda
Jul 7 '11 at 14:00
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What happens with constraints when a view is removed
... if they're not in iOS 6, it's probably a bug. BTW, the doc for the removeFromSuperview method says, "Calling this method removes any constraints that refer to the view you are removing, or that refer to any view in the subtree of the view you are removing".
– rdelmar
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Custom HTTP Authorization Header
...e pairs are the auth parameters. Though I believe the quotes are optional (from Apendix B of p7-auth-19)...
auth-param = token BWS "=" BWS ( token / quoted-string )
I believe this fits the latest standards, is already in use (see below), and provides a key-value format for simple extension (if yo...
emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?
...e top of the Emacs lisp reference index.
Edit: Or even more conveniently, from within Emacs itself:
M-x info RET (open the info browser)
d m elisp RET (open the elisp manual)
I # RET (list the entries for # in the index)
...
NSLog the method name with Objective-C in iPhone
...
print(__FUNCTION__) // Swift
NSLog(@"%@", NSStringFromSelector(_cmd)); // Objective-C
Swift 3 and above
print(#function)
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Reading a string with scanf
...res value of address &str[0]
strPtr own address in memory is different from the memory address that it stores (address of array in memory a.k.a &str[0])
&strPtr represents the address of strPtr itself
I think that you could declare a pointer to a pointer as:
char **vPtr = &strPtr...