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PHP - Get bool to echo false when false
...'s a weird way to do it, because array keys cannot be bool types. PHP will cast that to array(0 => 'false', 1 => 'true').
– Mark E. Haase
Feb 9 '11 at 19:00
66
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When to use NSInteger vs. int
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The simplest way according to Apple manual is casting value to the biggest numeric type long long. So all numeric types will use same type specifier.
– eonil
Jul 21 '12 at 19:24
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Curious null-coalescing operator custom implicit conversion behaviour
... ?? B is implemented as A.HasValue ? A : B. In this case, there's a lot of casting too (following the regular casting for the ternary ?: operator). But if you ignore all that, then this makes sense based on how it's implemented:
A ?? B expands to A.HasValue ? A : B
A is our x ?? y. Expand to x...
How do I update a Linq to SQL dbml file?
... was getting 'Specified cast is not valid' errors when performing a simple select on a view. Including 1b fixed it for me
– tomfumb
Nov 29 '11 at 19:40
6
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How do I use reflection to call a generic method?
...n "normal" usage would have had its type inferred, then it simply comes to casting the object of unknown type to dynamic. Here's an example:
class Alpha { }
class Beta { }
class Service
{
public void Process<T>(T item)
{
Console.WriteLine("item.GetType(): " + item.GetType()
...
DateTime format to SQL format using C#
...ther seldom used format, which is a bit weird but works for all versions:
select { d '2013-10-01' }
will return the first of october 2013.
select { ts '2013-10-01 13:45:01' }
will return october 1st, 1:45:01 PM
I strongly advice to use parameters and never format your own SQL code by pasting...
Java Enum definition
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Your solution has an unchecked cast: return (CHILD) this; Consider adding a getThis() method: protected CHILD getThis() { return this; } See: angelikalanger.com/GenericsFAQ/FAQSections/…
– Roland
Nov 28 '1...
How do I convert uint to int in C#?
...int is greater than int.MaxValue you'll get a negative result if you use a cast, or an exception if you use Convert.ToInt32.
– LukeH
Jul 15 '09 at 14:52
4
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Python division
... Python is giving you an integer back:
>>> 10 / 90
0
If if you cast this to a float afterwards the rounding will have already been done, in other words, 0 integer will always become 0 float.
If you use floats on either side of the division then Python will give you the answer you expect...
Purpose of Unions in C and C++
... @legends2k: any decent optimizer will recognize bitwise operations that select an entire byte and generate code to read/write the byte, same as the union but well-defined (and portable). e.g. uint8_t getRed() const { return colour & 0x000000FF; } void setRed(uint8_t r) { colour = (colour &...