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MySQL error: key specification without a key length
...uations not the best one. Your key is consisting of two columns and column order is important.
– MrD
Nov 22 '15 at 12:19
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Integrating MySQL with Python in Windows
...rrently, I would recommend using PyMySQL. It's pure python, so it supports all OSes equally, it's almost a drop-in replacement for mysqldb, and it also works with python 3. The best way to install it is using pip. You can install it from here (more instructions here), and then run:
pip install pymy...
What is the difference between Python's list methods append and extend?
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Actually there's a big difference - x + [4, 5] gives you a new list assigned to x - x.extend() mutates the original list. I elaborate in my answer here below.
– Aaron Hall♦
Jul 17 '17 at 1...
How to get folder path from file path with CMD
...y helpful if the arguments can be passed into the file in an indeterminate order or the path isn't passed into the file at all.
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How to encode a URL in Swift [duplicate]
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Swift 4.2
var urlString = originalString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
Swift 3.0
var address = "American Tourister, Abids Road, Bogulkunta, Hyderabad, Andhra Pradesh, India"
let escapedAddress = address.addingPercentEncoding(withAllowedCharacters: Characte...
Get the current first responder without using a private API
...that my app cannot be accepted because I'm using a non-public API; specifically, it says,
28 Answers
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Do I have to Close() a SQLConnection before it gets disposed?
Per my other question here about Disposable objects , should we call Close() before the end of a using block?
8 Answers
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Left-pad printf with spaces
...Note, Ray Hulha has removed the string literal concatenation, evidently in order to fix a "compiler issue".
– mwfearnley
Oct 1 '17 at 14:03
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Where do I set my company name?
...lt, Xcode inserts a company
name something similar to the
following in all new source files (.m
.h etc):
Copyright (c) 2009 MyCompanyName. All
rights reserved.
Changing this reference is as simple
as entering the following from within
a terminal window, replacing
“YourNameH...
Create an empty list in python with certain size
...st comprehension (Using the squares because for range you don't need to do all this, you can just return range(0,9) ):
>>> def display():
... return [x**2 for x in range(9)]
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>>> print display()
[0, 1, 4, 9, 16, 25, 36, 49, 64]
...