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Case insensitive replace
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If you're only doing a single replace, or want to save lines of code, it's more efficient to use a single substitution with re.sub and the (?i) flag: re.sub('(?i)' + re.escape('hippo'), 'giraffe', 'I want a hIPpo for my birth...
Struct Constructor in C++?
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In C++ the only difference between a class and a struct is that members and base classes are private by default in classes, whereas they are public by default in structs.
So structs can have constructors, and the syntax is the same as for c...
Dealing with float precision in Javascript [duplicate]
...r decimals, like decimal.js
Format your result to some fixed number of significant digits, like this:
(Math.floor(y/x) * x).toFixed(2)
Convert all your numbers to integers
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Is there a way to loop through a table variable in TSQL without using a cursor?
...uld choose really depends on the structure and volume of your data.
Note: If you are using SQL Server you would be better served using:
WHILE EXISTS(SELECT * FROM #Temp)
Using COUNT will have to touch every single row in the table, the EXISTS only needs to touch the first one (see Josef's answer...
Can I change multiplier property for NSLayoutConstraint?
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If you have only have two sets of multipliers that need to be applied, from iOS8 onwards you can add both sets of constraints and decide which should be active at any time:
NSLayoutConstraint *standardConstraint, *zoomedCons...
Which is better in python, del or delattr?
...is translates into the first running slightly faster (but it's not a huge difference – .15 μs on my machine).
Like the others have said, you should really only use the second form when the attribute that you're deleting is determined dynamically.
[Edited to show the bytecode instructions genera...
What is the advantage of using REST instead of non-REST HTTP?
...all the getters and POST for all the setters, we try to have the URLs identify resources, and then use the HTTP actions GET, POST, PUT and DELETE to do stuff to them. So instead of
GET /get_article?id=1
POST /delete_article id=1
You would do
GET /articles/1/
DELETE /articles/1/
And then POST...
Convert a row of a data frame to vector
...tly more explicit way to get to the same result.
As @Josh comments below, if you have a not-completely-numeric (alphabetic, factor, mixed ...) data frame, you need as.character(df[1,]) instead.
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jQuery - Illegal invocation
..., fitting to the default content-type "application/x-www-form-urlencoded". If you want to send a DOMDocument, or other non-processed data, set this option to false.
– BOTJr.
Apr 12 '16 at 21:34
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
When looking at the documentation, I hardly see any big difference. Both "value" and "object" are of type id , so can be any object. Key is once a string, and in the other case an id. One of them seems to retain the object, and the other don't. What else? Which one is for what case?
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