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How to check if a database exists in SQL Server?
...u guys.
CREATE FUNCTION dbo.DatabaseExists(@dbname nvarchar(128))
RETURNS bit
AS
BEGIN
declare @result bit = 0
SELECT @result = CAST(
CASE WHEN db_id(@dbname) is not null THEN 1
ELSE 0
END
AS BIT)
return @result
END
GO
Now you can use it like this:
sel...
“Private” (implementation) class in Python
...
Use a single underscore prefix:
class _Internal:
...
This is the official Python convention for 'internal' symbols; "from module import *" does not import underscore-prefixed objects.
Edit: Reference to the single underscore convention
...
Remove blank attributes from an Object in Javascript
...r the for block.
– Gerardo Lima
May 10 '16 at 9:54
1
@GerardoLima, yes. I was kind of assuming th...
Python Dictionary Comprehension
...nd part, a dict-comprehension is just what you need:
{k: k for k in range(10)}
You probably shouldn't do this but you could also create a subclass of dict which works somewhat like a defaultdict if you override __missing__:
>>> class KeyDict(dict):
... def __missing__(self, key):
......
Unicode, UTF, ASCII, ANSI format differences
...hly tested, mind you.)
ASCII: Single byte encoding only using the bottom 7 bits. (Unicode code points 0-127.) No accents etc.
ANSI: There's no one fixed ANSI encoding - there are lots of them. Usually when people say "ANSI" they mean "the default locale/codepage for my system" which is obtained via ...
Python argparse: default value or specified value
...
MurrayMurray
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Attach parameter to button.addTarget action in Swift
...
Alsh compiler
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answered Jul 17 '14 at 23:08
codestercodester
...
What is the volatile keyword useful for?
...sGreg Mattes
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...
Python unittests in Jenkins?
...ail("shouldn't happen")
def test_pass(self):
self.assertEqual(10, 7 + 3)
def test_fail(self):
self.assertEqual(11, 7 + 3)
JUnit with pytest
run the tests with:
py.test --junitxml results.xml tests.py
results.xml:
<?xml version="1.0" encoding="utf-8"?>
<tests...
A proper wrapper for console.log with correct line number?
...with-correct-line-number
/// * https://stackoverflow.com/a/3806596/1037948
/// </remarks>
// via @fredrik SO trace suggestion; wrapping in special construct so it stands out
var suffix = {
"@": (this.lineNumber
? this.fileName + ...