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Regular expressions in an Objective-C Cocoa application
...'re interested in the position of the match or position of subexpressions, and you cannot get it with NSPredicate.
As mentioned you can use regex POSIX functions. But they are considered slow, and the regex syntax is limited compared to other solutions (ICU/pcre).
There are many OSS libraries, Cocoa...
MySQL Conditional Insert
... WHERE user = 123
AND item = 456)
In this, dual is a table with one row only (found originally in Oracle, now in mysql too). The logic is that the SELECT statement generates a single row of data with the required values, but only when the v...
How to simulate a click with JavaScript?
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@Anderson Green: I have added an example to this jsfiddle: jsfiddle.net/KooiInc/W4BHD
– KooiInc
Mar 19 '13 at 6:21
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How to get a reversed list view on a list in Java?
...ith an original list that is modifiable, changes to both the original list and the view are reflected in the other.
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SQL - many-to-many table primary key
...ving a primary key on (col1,col2) is guaranteed unique (assuming your col1 and col2 values in the referenced tables are unique) and a separate index on (col2,col1) will catch those cases where the opposite order would execute faster. The surrogate is a waste of space.
You won't need indexes on the ...
How do I duplicate a whole line in Emacs?
I saw this same question for VIM and it has been something that I myself wanted to know how to do for Emacs. In ReSharper I use CTRL-D for this action. What is the least number of commands to perform this in Emacs?
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How to declare an array in Python?
...t can hold a heterogenous collection of objects (their types do not matter and can be freely mixed). This should not be confused with the array module, which offers a type closer to the C array type; the contents must be homogenous (all of the same type), but the length is still dynamic.
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How do I update my bare repo?
... doesn't show these updates in the bare repo. (Neither does git log --all, and neither does a working repo that created by cloning the bare repo - either via git log --all or by simply looking at new files that should show up there). It's a pretty quick test to see for yourself. Mostly I'm just curi...
How to override trait function and call it from the overridden function?
... You can't access its members directly. It's basically just automated copy and paste...
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Automatically add all files in a folder to a target using CMake?
...atform project from separate build management systems in Visual C++, XCode and makefiles to CMake.
4 Answers
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