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How do I determine which iOS SDK I have?
I'm sure this is simple, but how do I determine which version of the iOS SDK I currently have installed?
5 Answers
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Is there a more elegant way of adding an item to a Dictionary safely?
I need to add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
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__getattr__ on a module
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A while ago, Guido declared that all special method lookups on
new-style classes bypass __getattr__ and __getattribute__. Dunder methods had previously worked on modules - you could, for example, use a module as a context manager simply by defining __enter__ and __exit__, before ...
When is .then(success, fail) considered an antipattern for promises?
I had a look at the bluebird promise FAQ , in which it mentions that .then(success, fail) is an antipattern . I don't quite understand its explanation as for the try and catch.
What's wrong with this the following?
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Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
Using str_replace so that it only acts on the first match?
...h in the $subject . Is there an easy solution to this, or do I need a hacky solution?
22 Answers
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How to show vertical line to wrap the line in Vim?
...rtunately vim has no mechanism to display a vertical line after a column like you want (unlike, say, TextMate). However, there are alternative visual indicators that you can use to show that a line is too long.
Here's what I use (you can put this in your .vimrc):
nnoremap <Leader>H :call<...
What should go into an .h file?
...to provide the information that will be needed in multiple files. Things like class declarations, function prototypes, and enumerations typically go in header files. In a word, "definitions".
Code files (.cpp) are designed to provide the implementation information that only needs to be known in one...
C++ Erase vector element by value rather than by position? [duplicate]
...:remove(vec.begin(), vec.end(), 8), vec.end());
This combination is also known as the erase-remove idiom.
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Update multiple columns in SQL
...ard SQL and how mainstream RDBMS do it.
With a 100+ columns, you mostly likely have a design problem... also, there are mitigating methods in client tools (eg generation UPDATE statements) or by using ORMs
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