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Creating an empty file in C#
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File.WriteAllText("path", String.Empty);
or
File.CreateText("path").Close();
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What are the differences between segment trees, interval trees, binary indexed trees and range trees
...ng time, O(logn) query time, O(n) space
(k is the number of reported results).
All data structures can be dynamic, in the sense that the usage scenario includes both data changes and queries:
Segment tree - interval can be added/deleted in O(logn) time (see here)
Interval tree - interval can b...
how to show lines in common (reverse diff)?
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You can use this if your files aren't sorted: comm -1 -2 <(sort filename1) <(sort filename2)
– Kevin Wheeler
Dec 10 '15 at 20:30
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How to get object length [duplicate]
Is there any built-in function that can return the length of an object?
15 Answers
15
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Attach to a processes output for viewing
...red Dec 7 '12 at 13:17
Paul ScheltemaPaul Scheltema
1,7631414 silver badges2424 bronze badges
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Converting Secret Key into a String and Vice Versa
...ll) {stringKey = Base64.encodeToString(secretKey.getEncoded(), Base64.DEFAULT)}
String to SecretKey:
// DECODE YOUR BASE64 STRING
// REBUILD KEY USING SecretKeySpec
byte[] encodedKey = Base64.decode(stringKey, Base64.DEFAULT);
SecretKey originalKey = new SecretKeySpec(encodedKey, 0, ...
Removing duplicate objects with Underscore for Javascript
... btw, how did you get 4 upvotes? To get at the properties of your result you'd have to revert each array value back into an object. Something like JSON.parse(x[0]).a because x isn't an array of objects it's an array of strings. Also, if you add b values to the uniques and invert the order of a/...
Detecting which UIButton was pressed in a UITableView
...rself so you must just be consistent with what you do when creating cell. Although this approach does not really look elegant I have to admit
– Vladimir
May 14 '10 at 4:30
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Fastest method to replace all instances of a character in a string [duplicate]
...his.replace(new RegExp(str1.replace(/([\/\,\!\\\^\$\{\}\[\]\(\)\.\*\+\?\|\<\>\-\&])/g,"\\$&"),(ignore?"gi":"g")),(typeof(str2)=="string")?str2.replace(/\$/g,"$$$$"):str2);
}
It is very fast, and it will work for ALL these conditions
that many others fail on:
"x".replaceAll("x", "xy...
console.writeline and System.out.println
...password without echoing characters
System.out and System.err use the default platform encoding, while the Console class output methods use the console encoding
This latter behaviour may not be immediately obvious, but code like this can demonstrate the difference:
public class ConsoleDemo {
pu...