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What is a word boundary in regex?
...tring if it begins or ends (respectively) with a word character ([0-9A-Za-z_]).
So, in the string "-12", it would match before the 1 or after the 2. The dash is not a word character.
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improv...
Setup a Git server with msysgit on Windows [closed]
...where you choose between the Git
ssh and PuTTY ssh. You'll have to
set GIT_SSH manually if you use PuTTY.
I didn't follow one part of the
instructions and that was installing
Tortoise - I used the command line
instead as that's how I prefer to
learn a vcs like I did with rcs and Subversion and
foun...
java: HashMap not working
..., int[]> map = new HashMap<>();
int x = 1;
//put x in map
int[] x_ = new int[]{x};
map.put("x", x_);
//get the value of x
int y = map.get("x")[0];
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How do I push a new local branch to a remote Git repository and track it too?
... I still needed to 'git branch --set-upstream-to origin/remote' in order for 'git status' to correctly report my branch status with respect to the remote branch.
– Paul Whipp
Jul 4 '14 at 1:17
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What is the difference between iterator and iterable and how to use them?
...
I will answer the question especially about ArrayList as an example in order to help you understand better..
Iterable interface forces its subclasses to implement abstract method 'iterator()'.
public interface Iterable {
...
abstract Iterator<T> iterator(); //Returns an 'Iterator'...
Counting DISTINCT over multiple columns
...might expect in Oracle.
SQL> select distinct deptno, job from emp
2 order by deptno, job
3 /
DEPTNO JOB
---------- ---------
10 CLERK
10 MANAGER
10 PRESIDENT
20 ANALYST
20 CLERK
20 MANAGER
30 CLERK
30 MANAGER
30 S...
Is log(n!) = Θ(n·log(n))?
...rm and that log(n!) can therefore approximated by nlog(n) or that it is of order nlog(n) which is expressed by the big O notation O(n*log(n)).
– recipe_for_disaster
Oct 31 '19 at 18:44
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Redirect all output to file [duplicate]
...both stdout and stderr, you have to write the redirections in the opposite order from what works for files, cmd1 2>&1 | cmd2; putting the 2>&1 after the | will redirect stderr for cmd2 instead. If both stdout and stderr are redirected, a program can still access the terminal (if any) ...
How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
...j's 'workaround' link to this 2008 post: cunning.sharp.fm/2008/06/importing_private_keys_into_a.html
– cloudsurfin
Feb 11 '16 at 0:44
2
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What's the difference between '$(this)' and 'this'?
...ecution context
The scope refers to the current Execution ContextECMA. In order to understand this, it is important to understand the way execution contexts operate in JavaScript.
execution contexts bind this
When control enters an execution context (code is being executed in that scope) the env...