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How do I write the 'cd' command in a makefile?
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It is actually executing the command, changing the directory to some_directory, however, this is performed in a sub-process shell, and affects neither make nor the shell you're working from.
If you're looking to perform more tasks wit...
Simulator slow-motion animations are now on?
...that if he's using a beta, he could have pressed shift 3 times and accidentally activated it?
– CodaFi
Dec 25 '11 at 7:44
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Count how many records are in a CSV Python?
...aranteed to be a fixed size, so the only way to count them is to read them all.
– Martijn Pieters♦
Apr 19 '13 at 15:55
1
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Changing Mercurial “Default” Parent URL
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Normally we can use
$ hg push https://bitbucket.org/username/com.example.app
But if we want to use $ hg push without the repository URL we must add the URL to the file $REPO/.hg/hgrc. We add the following contents:
[paths]
default = https://bitbucket.org/username/com.example.app
Regarding your q...
Default height for section header in UITableView
...aticDimension returns -1 (hardcoded const) and I don't see any sections at all in my UITableView.
– skywinder
Sep 22 '13 at 21:17
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How is the undo tree used in Vim?
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See also :h undo-redo, which lists all the commands and their usage.
There are two ways to traverse the undo tree. One is to go "back in time". g+ and g- will traverse all of the nodes in the tree in chronological or reverse-chronological order (which can...
Collection that allows only unique items in .NET?
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If all you need is to ensure uniqueness of elements, then HashSet is what you need.
What do you mean when you say "just a set implementation"? A set is (by definition) a collection of unique elements that doesn't save element ...
How do I do redo (i.e. “undo undo”) in Vim?
...ers multiple paths through the undo history. This is useful if you accidentally type something after undoing too much.
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How to use clock() in C++
How do I call clock() in C++ ?
7 Answers
7
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What is a memory fence?
...ead/writes occur in the order you expect. For example a 'full fence' means all read/writes before the fence are comitted before those after the fence.
Note memory fences are a hardware concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemen...