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How to find all duplicate from a List? [duplicate]
...oList().ForEach(key => Console.WriteLine(string.Format("{0} appears {1} times", key, wordCount[key])));
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Lambda expression to convert array/List of String to array/List of Integers
...und another one line solution, but it's still pretty slow (takes about 100 times longer than a for cycle - tested on an array of 6000 0's)
String[] stringArray = ...
int[] out= Arrays.asList(stringArray).stream().map(Integer::parseInt).mapToInt(i->i).toArray();
What this does:
Arrays.asList(...
How to start a Process as administrator mode in C# [duplicate]
... of using a SecureString. -- You're supposed to read them in one char at a time from somewhere (i.e. a keyboard, or an encrypted source, etc.). -- If you have an actual string that contains the data anyway, then it's not secure.
– BrainSlugs83
Jun 26 '17 at 23:...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...ter (@headius on Twitter) that this is the correct explanation. He's a big-time JRuby dev, so I'd consider his word pretty authoritative.
– Hank Gay
Apr 20 '11 at 0:52
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Simpler way to create dictionary of separate variables?
... @keflavich I liked this approach very much and have used it from time to time now. However I cant get it to work inside functions. I guess there are "better" ways to do it, but none are as nice'n'simple as nbubis puts it. Have you been able to use it in functions keflavich? This is where I...
from list of integers, get number closest to a given value
...ks with dicts with int keys, like {1: "a", 2: "b"}. This method takes O(n) time.
If the list is already sorted, or you could pay the price of sorting the array once only, use the bisection method illustrated in @Lauritz's answer which only takes O(log n) time (note however checking if a list is a...
Will console.log reduce JavaScript execution performance?
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when the browser console is closed, calling console.log is about 10 000 times slower than calling an empty function,
and when the console is open, calling it is as much as 100 000 times slower.
Not that you'll notice the performance lag if you have a reasonable number of console.… calls firin...
C# Lambda expressions: Why should I use them?
... to the function without adding parameters to the function or creating one-time-use objects.
Expression trees are a very powerful new feature of C# 3.0 that allow an API to look at the structure of an expression instead of just getting a reference to a method that can be executed. An API just has ...
Does a foreign key automatically create an index?
... will create something akin to an index in the child table. I have a hard time believing this to be true, but can't find much out there related specifically to this.
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How to parse/format dates with LocalDateTime? (Java 8)
Java 8 added a new java.time API for working with dates and times ( JSR 310 ).
7 Answers
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