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Replace a character at a specific index in a string?
...d/or to modify its value
valueField.setAccessible(true);
//now we get the array the String instance is actually using
char[] value = (char[])valueField.get(text);
//The 13rd character is the "s" of the word "Test"
value[12]='x';
//We display the string...
Can git be integrated with Xcode?
.... You bring up DTerm in a floating window with a key combination. DTerm knows the full path to the current document in the editor.
For Example to run a diff on the file you are editing you:
1) Press Ctrl-Return to bring up the DTerm window. (This key combo is configurable).
2) type 'git diff c...
“Go To Definition” in Visual Studio only brings up the Metadata
... file to remove the file reference to the problem project and all is fixed now
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How is Docker different from a virtual machine?
...ginally used LinuX Containers (LXC), but later switched to runC (formerly known as libcontainer), which runs in the same operating system as its host. This allows it to share a lot of the host operating system resources. Also, it uses a layered filesystem (AuFS) and manages networking.
AuFS is a la...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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I've been using Xcode for 5 years now, and refactoring has never worked correctly (even xcode 4.6 has major bugs where it WILL corrupt your source code!).
The workaround has always been (still works 100%, even in cases where Apple's code fails)
use shift-c...
Convert dd-mm-yyyy string to date
.../(\d{2})-(\d{2})-(\d{4})/, "$2/$1/$3"))
Why not use regex?
Because you know you'll be working on a string made up of three parts, separated by hyphens.
However, if you were looking for that same string within another string, regex would be the way to go.
Reuse
Because you're doing this more th...
How can I read command line parameters from an R script?
... support commandArgs(). littler could be ported to Windows but lives right now only on OS X and Linux.
There are two add-on packages on CRAN -- getopt and optparse -- which were both written for command-line parsing.
Edit in Nov 2015: New alternatives have appeared and I wholeheartedly recommend ...
Laravel - Eloquent or Fluent random row
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tl;dr: It's nowadays implemented into Laravel, see "edit 3" below.
Sadly, as of today there are some caveats with the ->orderBy(DB::raw('RAND()')) proposed solution:
It isn't DB-agnostic. e.g. SQLite and PostgreSQL use RANDOM()
E...
How to get numbers after decimal point?
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does anyone know which would be the faster operation, this method described above, or: float b = a - int(a) ? i suspect the later, but wanted to see if there was confirmation
– hokkuk
Sep 8 '12 a...
Convert Int to String in Swift
...I see that there is a global toString method (not Int.toString()), anyone know the advantage over using the String() constructor?
– Nilloc
Apr 13 '15 at 1:58
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