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What is the !! (not not) operator in JavaScript?
...console.log(navigator.userAgent.match(/MSIE 8.0/));
// returns either an Array or null
But if you ⇒
console.log(!!navigator.userAgent.match(/MSIE 8.0/));
// returns either true or false
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Generator Expressions vs. List Comprehension
...the whole file, processes each line, and stores the matching lines in your array. This array could therefore contain up to 2TB of content. That's a lot of RAM, and probably not practical for your purposes.
So instead we can use a generator to apply a "filter" to our content. No data is actually rea...
Standard concise way to copy a file in Java?
....copy();
EnumSet<FileVisitOption> fileVisitOpts;
if (Arrays.toList(options).contains(java.nio.file.LinkOption.NOFOLLOW_LINKS) {
fileVisitOpts = EnumSet.noneOf(FileVisitOption.class)
} else {
fileVisitOpts = EnumSet.of(FileVisitOption.FOLLOW_LINK...
Python Sets vs Lists
...: https://en.wikipedia.org/wiki/Hash_table
List implementation: usually an array, low level close to the metal good for iteration and random access by element index.
Set implementation: https://en.wikipedia.org/wiki/Hash_table, it does not iterate on a list, but finds the element by computing a hash...
Check if list contains any of another list
...where the condition becomes true ? I have a list with sentences. I have an array with particular words. I want indexes of the list if the sentence have atleast one words from the array. @BrokenGlass
– kirushan
Mar 17 '17 at 2:44
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How to convert View Model into JSON object in ASP.NET MVC?
...
Json.Encode encodes my 2-dimensional array to a 1-dimensional array in json. Newtonsoft.Json.JsonConvert.SerializeObject serializes the two dimensions properly into json. So I suggest to use the latter one.
– mono68
Feb 5 '...
Logging in Scala
...have more than two values to interpolate, since then you need to create an Array of values to interpolate.
A more Scala like solution is to use a thunk or cluster to delay the concatenation of the error message. A good example of this is Lift's logger
Log.scala
Slf4jLog.scala
Which looks like th...
How to get a index value from foreach loop in jstl
... I need to know the index[location] of each element comes in the String Array.
– Java Questions
Sep 16 '13 at 11:10
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How to refresh Android listview?
...place to look if you don't find changes coming through. Debug if needed.
ArrayAdapter vs BaseAdapter
I did find that working with an adapter that lets you manage the collection, like a BaseAdapter works better. Some adapters like the ArrayAdapter already manage their own collection making it hard...
What is the difference between JVM, JDK, JRE & OpenJDK?
...combination. It is responsible for all the things like garbage collection, array bounds checking, etc… JVM is platform dependent.
The JVM is called “virtual” because it provides a machine interface that does not depend on the underlying operating system and machine hardware architecture. This...