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Is returning by rvalue reference more efficient?
...p;b) {
return std::move(a < b? a: b);
}
int main() {
const std::string s = min_(std::string("A"), std::string("B"));
fprintf(stderr, "min: %s\n", s.c_str());
return 0;
}
As an interesting observation, on my machine clang++ -O3 generates 54 instructions for code above versus 62 ins...
When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
...tem.Net.HttpWebRequest]::Create($url)
}
else {
$URL_Format_Error = [string]"Connection protocol not specified. Recommended action: Try again using protocol (for example 'http://" + $url + "') instead. Function aborting..."
Write-Error $URL_Format_Error
return
}
It looks like t...
Array slices in C#
...raySegment<T>. It's very light-weight as it doesn't copy the array:
string[] a = { "one", "two", "three", "four", "five" };
var segment = new ArraySegment<string>( a, 1, 2 );
share
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i...
Calling a JavaScript function named in a variable [duplicate]
...d, then:
myNameSpace["functionName"]();
Avoid eval, and avoid passing a string in to setTimeout and setInterval. I write a lot of JS, and I NEVER need eval. "Needing" eval comes from not knowing the language deeply enough. You need to learn about scoping, context, and syntax. If you're ever stuck...
Grepping a huge file (80GB) any way to speed it up?
...ocale instead of UTF-8.
2) Use fgrep because you're searching for a fixed string, not a regular expression.
3) Remove the -i option, if you don't need it.
So your command becomes:
LC_ALL=C fgrep -A 5 -B 5 'db_pd.Clients' eightygigsfile.sql
It will also be faster if you copy your file to RAM di...
How to load a xib file in a UIView
...tion:
extension Bundle {
static func loadView<T>(fromNib name: String, withType type: T.Type) -> T {
if let view = Bundle.main.loadNibNamed(name, owner: nil, options: nil)?.first as? T {
return view
}
fatalError("Could not load view with type " + S...
How do we use runOnUiThread in Android?
...then call this function from your background thread.
public void debugMsg(String msg) {
final String str = msg;
runOnUiThread(new Runnable() {
@Override
public void run() {
mInfo.setText(str);
}
});
}
...
What's the difference between “Request Payload” vs “Form Data” as seen in Chrome dev tools Network t
...is no such thing as a "json object". the json data sent is sent as a plain string because json is essentially a string. you can of course convert it into a standard "object" with json_encode but that doesn't make it a "json object" either.
– Volkan Ulukut
Dec 7...
What does the “@” symbol do in Powershell?
...ters, e.g. using the hash table just above, Copy-Item @HashArguments
Here strings (see about_quoting_rules)
Let's you create strings with easily embedded quotes, typically used for multi-line strings, e.g.:
$data = @"
line one
line two
something "quoted" here
"@
Because this type of question (w...
What Automatic Resource Management alternatives exist for Scala?
...ported: try with resources by using Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readLine()).map(_ -> ())).toList
}
or using Using.resource avoid Try
val lines: Seq[Strin...