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Are Java static calls more or less expensive than non-static calls?
...java.io.*;
class StaticVsInstanceBenchmark
{
public static void main( String[] args ) throws Exception
{
StaticVsInstanceBenchmark program = new StaticVsInstanceBenchmark();
program.run();
}
static final int DURATION = 1000;
public void run() throws Exception
...
How to reliably open a file in the same directory as a Python script
...tively or if the script is read from standard input), path[0] is the empty string, which directs Python to search modules in the current directory first. Notice that the script directory is inserted before the entries inserted as a result of PYTHONPATH.
sys.path[0] is what you are looking for.
...
How to redirect 404 errors to a page in ExpressJS?
...r code but using res.json will do some magic in auto-converting objects to strings where .send() won't. Better safe than sorry. expressjs.com/api.html#res.json
– wgp
Dec 12 '14 at 18:54
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How to add column if not exists on PostgreSQL?
...t pass these as parameters, you'll need to do variable substitution in the string on the client side, but this is a self contained query that only emits a message if the column already exists, adds if it doesn't and will continue to fail on other errors (like an invalid data type).
I don't recommend...
Grep characters before and after match?
...
3 characters before and 4 characters after
$> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}'
23_string_and
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How to get the directory of the currently running file?
...e recommended way of doing this is with os.Executable:
func Executable() (string, error)
Executable returns the path name for the executable that started the current process. There is no guarantee that the path is still pointing to the correct executable. If a symlink was used to start the process,...
Remove empty elements from an array in Javascript
...d on what you consider to be "empty" for example, if you were dealing with strings, the above function wouldn't remove elements that are an empty string.
One typical pattern that I see often used is to remove elements that are falsy, which include an empty string "", 0, NaN, null, undefined, and fa...
What is the shortest function for reading a cookie by name in JavaScript?
...s or tabs will not become visible. You can avoid this issue by storing the string-value from document.cookie in a variable and check if it is unchanged on each access.
– Andreas
Apr 1 '15 at 15:41
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How do I get a file extension in PHP?
... my pathinfo is disabled then short way to extract extension string ?
– khizar ansari
Aug 10 '12 at 18:20
19
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How to rename with prefix/suffix?
...
what if "from" or "to" are empty strings, i.e. you want to append something to each filename or remove something completely
– Troyseph
Oct 4 '19 at 14:51
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