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How to grep for two words existing on the same line? [duplicate]
... Or, in my case, it will fail since there's neither a file nor a directory called logs where I'm running the pipeline. Note that the second grep doesn't read its standard input at all, so the pipe is superfluous.
With Bash, the parent shell waits until all the processes in the pipeline have exited...
Track all remote git branches as local branches
...ng
Confirm that we're not tracking anything other than master already, locally:
$ git branch -l # or using just git branch
* master
You can use this one liner to create the tracking branches:
$ for i in $(git branch -r | grep -vE "HEAD|master"); do
git branch --track ${i#*/} $i; done
B...
Interview question: Check if one string is a rotation of other string [closed]
...er above includes an O(n) operation in an O(n) loop (the substring/indexOf call). Even with a more efficient search algorithm; say Boyer-Moore or KMP, the worst-case is still O(n^2) with duplicates.
A O(n) randomized answer is straightforward; take a hash (like a Rabin fingerprint) that supports a...
Test a weekly cron job [closed]
...helpful to have.
One of my favorite techniques is to use a script I wrote called 'crontest'. It launches the target command inside a GNU screen session from within cron, so that you can attach with a separate terminal to see what's going on, interact with the script, even use a debugger.
To set t...
Container-fluid vs .container
...emantics: "fixed width"
You can see how naming confusion can arise. Technically, we can say .container is "fixed width", but it is fixed only in the sense that it doesn't resize at every granular width. It's actually not "fixed" in the sense that it's always stays at a specific pixel width, since i...
Deleting elements from std::set while iterating
...ing do not trust an old remembered dq.end() value, always compare to a new call to dq.end().
– Jesse Chisholm
Apr 24 '19 at 21:42
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Can someone explain Microsoft Unity?
...ad. A bit easier to grok, I think, when the IoC stuff is new to you.
Basically, if you understand IoC then you understand that what you're doing is inverting the control for when an object gets created.
Without IoC:
public class MyClass
{
IMyService _myService;
public MyClass()
{
...
What is the relative performance difference of if/else versus switch statement in Java?
...d get hold of all implementations in some Map. You can do this either statically or dynamically:
Map<String, Action> actions = new HashMap<String, Action>();
Finally replace the if/else or switch by something like this (leaving trivial checks like nullpointers aside):
actions.get(nam...
Mipmap drawables for icons
... both cases). The folder is kind of badly named; they probably should have called it drawable-nostrip or something.
– Timmmm
Nov 5 '15 at 11:47
2
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Convert form data to JavaScript object with jQuery
...is already written, is unit tested in multiple browsers, and could theoretically be improved in later versions of jQuery. The less code you write that has to access inconsistent things like DOM elements directly, the more stable your code will be.
– Tobias Cohen
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