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How to replace an entire line in a text file by line number
... @PubuduDodangoda sed -i would accomplish that
– SeanFromIT
Aug 9 at 1:43
add a comment
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How to get current time and date in C++?
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In C++ 11 you can use std::chrono::system_clock::now()
Example (copied from en.cppreference.com):
#include <iostream>
#include <chrono>
#include <ctime>
int main()
{
auto start = std::chrono::system_clock::now();
// Some computation here
auto end = std::chrono...
Is recursion ever faster than looping?
...n some environments these functions are the first (or only) to get a boost from automatic parallelization — so they can be significantly faster than either iteration or recursion. Data Parallel Haskell is an example of such an environment.
List comprehensions are another alternative, but these ...
Using Mockito's generic “any()” method
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I had a problem with the import, I was using the any() from hamcrest in my imports and it collided with the one from mockito.
– Doppelganger
Jun 13 '14 at 13:55
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Are there any HTTP/HTTPS interception tools like Fiddler for mac OS X? [closed]
...plications like fiddler but for mac OS X, as I need to debug some requests from web applications in Mac OS X. I used to do it with fiddler on Windows and would love to have this tool available on Mac as well.
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Is a statically-typed full Lisp variant possible?
...toms in the tree to be of the same type. We want them to be able to differ from leaf to leaf. A better approach requires the use of Haskell's existential quantifiers:
class Atomic a where ?????
data Cons = CCons Cons Cons
| forall a. Atomic a => CAtom a
But now you come to the cr...
What does “export” do in shell programming? [duplicate]
...and also lines just showing $ to show more clearly that there is no output from the grep command. Of course, feel free to rollback if you think this loses readability
– fedorqui 'SO stop harming'
Apr 26 '15 at 18:53
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How to maintain a Unique List in Java?
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You can use a Set implementation:
Some info from the JAVADoc:
A collection that contains no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1.equals(e2), and at most one null element. As implied by its name, this interface m...
In Typescript, How to check if a string is Numeric
... longer available in rxjs v6
I'm solved it by using the isNumeric operator from rxjs library (importing rxjs/util/isNumeric
Update
import { isNumeric } from 'rxjs/util/isNumeric';
.
.
.
var val = "5700";
if (isNumeric(val)){
alert("it is number !");
}
...
Regex expressions in Java, \\s vs. \\s+
... regular expression quantifiers, and they perform matches like this (taken from the documentation):
Greedy quantifiers
X? X, once or not at all
X* X, zero or more times
X+ X, one or more times
X{n} X, exactly n times
X{n,} X, at least n times
X{n,m} X, at least n but not more than m times
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