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Differences between Perl and PHP [closed]
... collections (hashes). In PHP, they're the same type: an associative array/ordered map.
Perl arrays aren't sparse: setting an element with index larger than the current size of the array will set all intervening elements to undefined (see perldata). PHP arrays are sparse; setting an element won't se...
How do I install an R package from source?
...step).
Plus: you can use this trick with devtools library's dev_mode, in order to manage different versions of packages:
Reference: doc devtools
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What exactly is RESTful programming?
...
}
Notice that we are using different HTTP verbs (GET, PUT, POST, DELETE etc.) to manipulate these resources, and that the only knowledge we presume on the client's part is our media definition.
Further reading:
The many much better answers on this very page.
How I explained REST to my wife. ...
Determine project root from a running node.js application
...y on a global variable, which means that you can't easily reuse components/etc.
process.cwd()
This returns the current working directory. Not reliable at all, as it's entirely dependent on what directory the process was launched from:
$ cd /home/demo/
$ mkdir subdir
$ echo "console.log(process.c...
How can I detect the touch event of an UIImageView?
...as the button image. But if you want finer-grain control over taps, moves, etc. this is the way to go.
You'll also want to look at a few more things:
Override canBecomeFirstResponder and return YES to indicate that the view can become the focus of touch events (the default is NO).
Set the userInt...
What are the dangers when creating a thread with a stack size of 50x the default?
... know how to predict it - permissions, GC (which needs to scan the stack), etc - all could be impacted. I would be very tempted to use unmanaged memory instead:
var ptr = Marshal.AllocHGlobal(sizeBytes);
try
{
float* x = (float*)ptr;
DoWork(x);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
...
Awaiting multiple Tasks with different results
...nAll makes no difference to how the tasks run (concurrently, sequentially, etc). At the highest level, Task.WhenAll predates good compiler support for async/await, and was useful when those things didn't exist. It is also useful when you have an arbitrary array of tasks, rather than 3 discreet tasks...
py2exe - generate single executable file
...ons.
That's because of GTK+ tries to load its data files (locals, themes, etc.) from the directory it was loaded from. So you have to make sure that the directory of your executable contains also the libraries used by GTK+ and the directories lib, share and etc from your installation of GTK+. Other...
String formatting in Python 3
...ument (using named arguments instead of positional ones, accessing fields, etc) and many format options as well (padding the number, using thousands separators, showing sign or not, etc). Some other examples:
"({goals} goals, ${penalties})".format(goals=2, penalties=4)
"({goals} goals, ${penalties}...
Reading specific lines only
...ked above:
>>> import linecache
>>> linecache.getline('/etc/passwd', 4)
'sys:x:3:3:sys:/dev:/bin/sh\n'
Change the 4 to your desired line number, and you're on. Note that 4 would bring the fifth line as the count is zero-based.
If the file might be very large, and cause problems...