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Collapse sequences of white space into a single character and trim string
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OS X 10.7+ and iOS 3.2+
Use the native regexp solution provided by hfossli.
Otherwise
Either use your favorite regexp library or use the following Cocoa-native solution:
NSString *theString = @" Hello this is a long ...
Flattening a shallow list in Python [duplicate]
...be the best way to flatten a shallow list like this, balancing performance and readability?
23 Answers
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Simulate limited bandwidth from within Chrome?
... answered Apr 26 '12 at 8:17
Andy DaviesAndy Davies
5,65722 gold badges2323 silver badges2121 bronze badges
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How to check if field is null or empty in MySQL?
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end as field1
from tablename
If you only want to check for null and not for empty strings then you can also use ifnull() or coalesce(field1, 'empty'). But that is not suitable for empty strings.
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Transferring an app to another Firebase account
... to another account. All you have to do is:
Go to your Firebase console, and select the project you want to shift.
Select the cog icon besides the project name on top right.
Select Permissions from the flyout.
Select Advanced permission settings hyperlink.
You've reached the IAM & Admin page o...
How do I print a list of “Build Settings” in Xcode project?
...little out dated (it was generated with Xcode 4.1). You should run the command suggested by dunedin15.
dunedin15's answer can give inaccurate results for some edge-cases, such as when debugging build settings of a static lib for an Archive build, see Slipp D. Thompson's answer for a more robust outp...
CREATE TABLE IF NOT EXISTS equivalent in SQL Server [duplicate]
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if not exists (select * from sysobjects where name='cars' and xtype='U')
create table cars (
Name varchar(64) not null
)
go
The above will create a table called cars if the table does not already exist.
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Double negation (!!) in javascript - what is the purpose? [duplicate]
...good case for it after I posted that. When doing a return from a function and needing a boolean type to be returned and not the object itself, such as: return !!guess; I can see why the earlier usage is not totally necessary. (guess = !!option.guess)
– JoePC
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Using headers with the Python requests library's get method
So I recently stumbled upon this great library for handling HTTP requests in Python; found here http://docs.python-requests.org/en/latest/index.html .
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How do I remove leading whitespace in Python?
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The lstrip() method will remove leading whitespaces, newline and tab characters on a string beginning:
>>> ' hello world!'.lstrip()
'hello world!'
Edit
As balpha pointed out in the comments, in order to remove only spaces from the beginning of the string, lstrip(' ') s...