大约有 44,000 项符合查询结果（耗时：0.0417秒） [XML]
Differences between fork and exec
...d process (parent) as its parent PID (PPID). Because the two processes are now running exactly the same code, they can tell which is which by the return code of fork - the child gets 0, the parent gets the PID of the child. This is all, of course, assuming the fork call works - if not, no child is c...
Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
...
One reason is that up to now every assignment operator (i.e. an operator which changes a variable) has a = in it. If you add ++ and --, that's no longer the case.
Another reason is that the behavior of ++ and -- often confuse people. Case in point: ...
How to change the href for a hyperlink using jQuery
...ery 1.4, the last example doesn't require using each - the following would now be possible: $(selector).attr('href', function() { return this.replace(/.../, '...'); });
– David Hedlund
Aug 11 '10 at 14:17
...
How can I install MacVim on OS X?
...tall vim && brew install macvim
Step 4. Run brew link macvim
You now have the latest versions of vim and macvim managed by brew. Run brew update && brew upgrade every once in a while to upgrade them.
This includes the installation of the CLI mvim and the mac application (which bot...
How can I push a specific commit to a remote, and not previous commits?
...cific git setup. Perhaps you rebased past the remote HEAD commit? I don't know what a protected branch is, sounds like a permission issue.
– Samuel
Jan 13 '16 at 16:49
1
...
Is there a way to change the spacing between legend items in ggplot2?
...
Now that opts is deprecated in ggplot2 package, function theme should be used instead:
library(grid) # for unit()
... + theme(legend.key.height=unit(3,"line"))
... + theme(legend.key.width=unit(3,"line"))
...
Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...
As far as I know, there are only two kinds of functions, destructive and constructive.
While constructive function, as the name implies, constructs something, a destructive one destroys something, but not in the way you may think now.
F...
Saving an Object (Data persistence)
...med _pickle, but doing this is no longer necessary since the pickle module now does it automatically—see What difference between pickle and _pickle in python 3?.
The rundown is you could use something like the following to ensure that your code will always use the C version when it's available in...
How do I run multiple instances of Android Studio
...ings -> Project Opening.
Check [x] "Confirm window to open project in".
Now open the other (2nd) project with File -> Open... etc.
You will now be asked if you want to open a new window or replace what you already have. Select New Window.
Screenshots:
Older versions:
Go to Setting...
How do you mock out the file system in C# for unit testing?
...dly posted it online here.
I've used this approach to mock out DateTime.UtcNow in an IClock
interface (really really useful for our testing to be able to control
the flow of time!), and more traditionally, an ISqlDataAccess
interface.
Another approach might be to use TypeMock, this allows you to
int...