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Performance of Java matrix math libraries? [closed]
...d of course write your own native library with those optimisations to call from Java).
So what does all this mean? Well:
in principle, it is worth hunting around for a better-performing library, though unfortunately I can't recomend one
if performance is really critical to you, I would consider j...
Comma in C/C++ macro
...A nice trick to workaround this is that in C++, you can extract a typename from a parenthesized type name using a function type:
template<typename T> struct argument_type;
template<typename T, typename U> struct argument_type<T(U)> { typedef U type; };
#define FOO(t,name) argument...
Reading file contents on the client-side in javascript in various browsers
... can use the <input type="file"> tag. You can find information on it from MSDN. When the file is chosen you can use the FileReader API to read the contents.
function onFileLoad(elementId, event) {
document.getElementById(elementId).innerText = event.target.result;
}
function onC...
C# vs Java generics [duplicate]
...as taken to keep the legacy code compatible with new code using generics:
From The Java Tutorials, Generics: Type Erasure:
When a generic type is instantiated,
the compiler translates those types by
a technique called type erasure — a
process where the compiler removes all
information...
new Date() works differently in Chrome and Firefox
...h, unfortunately the date-parsing algorithms are implementation-dependent. From the specification of Date.parse (which is used by new Date):
The String may be interpreted as a local time, a UTC time, or a time in some other time zone, depending on the contents of the String. The function first a...
HTML-encoding lost when attribute read from input field
I’m using JavaScript to pull a value out from a hidden field and display it in a textbox. The value in the hidden field is encoded.
...
What is the difference between single-quoted and double-quoted strings in PHP?
...
seems 'heredoc' is ported to PHP from bash or is it not? Anyways great answer, so a +1 Thanks.
– sjsam
Jan 8 '15 at 6:20
2
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Is there a better way to run a command N times in bash?
...
Any way to discard the number from seq ? so it would just print Hi there 20 times (no number)? EDIT: just use -I{} and then do not have any {} in the command
– Mike Graf
Aug 24 '16 at 21:48
...
PHP Error handling: die() Vs trigger_error() Vs throw Exception
...by using different levels of error messages) and you can hide those errors from end-users (using set_error_handler()) but still have them be displayed to you during testing.
Also trigger_error() can produce non-fatal messages important during development that can be suppressed in production code us...
Passing an array to a function with variable number of args in Swift
... numbers {
total += i
}
return total
}
Step 2: Call this from within your variadic function:
func sumOf(numbers: Int...) -> Int {
return sumOf(numbers)
}
Step 3: Call Either Way:
var variadicSum = sumOf(1, 2, 3, 4, 5)
var arraySum = sumOf([1, 2, 3, 4, 5])
It seems stra...