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Checking if a SQL Server login already exists
I need to check if a specific login already exists on the SQL Server, and if it doesn't, then I need to add it.
10 Answers
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Automatic TOC in github-flavoured-markdown
Is it possible to generate an automatic Table of Contents using Github Flavoured Markdown ?
17 Answers
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How to clean node_modules folder of packages that are not in package.json?
Assume I install project packages with npm install that looks into package.json for modules to be installed. After a while I see that I don't need some specific module and remove its dependency from package.json . Then I remove some other modules from package.json because they are not needed ...
pythonic way to do something N times without an index variable?
...
A slightly faster approach than looping on xrange(N) is:
import itertools
for _ in itertools.repeat(None, N):
do_something()
share
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Count the number of occurrences of a string in a VARCHAR field?
...T
title,
description,
ROUND (
(
LENGTH(description)
- LENGTH( REPLACE ( description, "value", "") )
) / LENGTH("value")
) AS count
FROM <table>
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How to paste over without overwriting register
...s anyone know of a way to paste over a visually selected area without having the selection placed in the default register?
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
...abases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer would have to catch the fact that your GROUP BY is not taking advantage of any group members, just their keys. DISTINCT makes this expli...
How to use NSJSONSerialization
I have a JSON string (from PHP's json_encode() that looks like this:
12 Answers
12
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How to return a value from __init__ in Python?
...required to return None. You cannot (or at least shouldn't) return something else.
Try making whatever you want to return an instance variable (or function).
>>> class Foo:
... def __init__(self):
... return 42
...
>>> foo = Foo()
Traceback (most recent call last):
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How can I know which parts in the code are never used?
... have legacy C++ code that I'm supposed to remove unused code from. The problem is that the code base is large.
18 Answers
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