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Check for column name in a SqlDataReader object
... called "EmployeeName" but also give it an alias of "EmpName", and doing a select for either name would return the data in that column. With me so far?
Now imagine that there's an ADO.NET provider for that database, and they've coded up an IDataReader implementation for it which takes column aliase...
How do you test functions and closures for equality?
...
Simplest way is designate the block type as @objc_block, and now you can cast it to an AnyObject which is comparable with ===. Example:
typealias Ftype = @objc_block (s:String) -> ()
let f : Ftype = {
ss in
println(ss)
}
let ff : Ftype = {
sss in
...
Can I call a base class's virtual function if I'm overriding it?
...
This is a better answer than the selected one. Thanks.
– Mad Physicist
Oct 17 '14 at 20:41
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Convert int to string?
...e) * 8);
BitArray[] bitArrays = BitConverter.GetBytes(value).Reverse().Select(b => new BitArray(new []{b})).ToArray();
foreach (bool bit in bitArrays.SelectMany(bitArray => bitArray.Cast<bool>().Reverse()))
{
builder.Append(bit ? '1' : '0');
}
return builder.T...
getSupportActionBar from inside of Fragment ActionBarCompat
...l have a valid activity accessible through getActivity().
You'll need to cast it to an ActionBarActivity then make the call to getSupportActionBar().
((AppCompatActivity)getActivity()).getSupportActionBar().setSubtitle(R.string.subtitle);
You do need the cast. It's not poor design, it's backwar...
Calculating the difference between two Java date instances
...oid. Rounding errors exist. Example 19th to 21st May says 1 day because it casts 1.99 to 1. Use round before casting to int.
– Pratik Mandrekar
May 1 '13 at 14:51
4
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?
...alise strings that will be modified, because they are of type const char*. Casting away the constness to later modify them is undefined behaviour, so you have to copy your const char* strings char by char into dynamically allocated char* strings in order to modify them.
Example:
#include <iostr...
Convert an enum to List
...T);
return !t.IsEnum ? null : Enum.GetValues(t).Cast<Enum>().Select(x => x.GetDescription()).ToList();
}
When you call this helper you will get the list of item descriptions.
List<string> items = HelperMethods.GetListOfDescription<CancelReasonEnum>();
ADDITION:...
How do I trim leading/trailing whitespace in a standard way?
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You have to cast the argument for isspace to unsigned char, otherwise you invoke undefined behavior.
– Roland Illig
Sep 18 '16 at 1:56
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Type definition in object literal in TypeScript
... The DRY (Don't Repeat Yourself) option by @Rick Love with the cast operator seems mucho neater. Just commenting, not downvoting...
– spechter
Nov 17 '17 at 0:43
...