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Creating a UICollectionView programmatically
I'm looking for a guide or tutorial that will show me how to set up a simple UICollectionView using only code.
12 Answers
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The order of elements in Dictionary
...dictionary is non-deterministic. The notion of order simply is not defined for hashtables. So don't rely on enumerating in the same order as elements were added to the dictionary. That's not guaranteed.
Quote from the doc:
For purposes of enumeration, each item in the dictionary is treated as a...
SQLAlchemy: print the actual query
I'd really like to be able to print out valid SQL for my application, including values, rather than bind parameters, but it's not obvious how to do this in SQLAlchemy (by design, I'm fairly sure).
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How to join strings in Elixir?
...hat you have is an arbitrary list, then you can use Enum.join, but if it's for just two or three, explicit string concatenation should be easier to read
"StringA" <> " " <> "StringB"
However, often you don't need to have it as a single string in memory if you're going to output it thr...
Are HLists nothing more than a convoluted way of writing tuples?
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Addressing questions one to three: one of the main applications for HLists is abstracting over arity. Arity is typically statically known at any given use site of an abstraction, but varies from site to site. Take this, from shapeless's examples,
def flatten[T <: Product, L <: HLis...
AfxGetMainWnd函数解惑 - C/C++ - 清泛网 - 专注C/C++及内核技术
...时也会失灵。不信， 你测试一下下面的代码：
unsigned __stdcall SecondThreadFunc( void* pArguments )
{
CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd();
if (NULL!=pMainWnd)
{
CView *pView = pMainWnd->GetActiveView();
if (NULL...
How to optimize for-comprehensions and loops in Scala?
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The problem in this particular case is that you return from within the for-expression. That in turn gets translated into a throw of a NonLocalReturnException, which is caught at the enclosing method. The optimizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catc...
Difference between . and : in Lua
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The colon is for implementing methods that pass self as the first parameter. So x:bar(3,4)should be the same as x.bar(x,3,4).
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Can I find events bound on an element with jQuery?
...ello") },
mouseout: function(){ alert("World") }
});
// Lookup events for this particular Element
$._data( $("#foo")[0], "events" );
The result from $._data will be an object that contains both of the events we set (pictured below with the mouseout property expanded):
Then in Chrome, you m...
is there a css hack for safari only NOT chrome?
im trying to find a css hack for just safari NOT chrome, i know these are both webkit browsers but im having problems with div alignments in chrome and safari, each displays differently.
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