How do I split a string with any whitespace chars as delimiters?

How do I split a string with any whitespace chars as delimiters?

What regex pattern would need I to pass to the java.lang.String.split() method to split a String into an Array of substrings using all whitespace characters (' ', '\t', '\n', etc.) as delimiters? 1:Something in the lines ofmyString.split

Subset by group with data.table

Subset by group with data.table

Assume I have a data table containing some baseball players:library(plyr)library(data.table)bdt <- as.data.table(baseball)For each player (given by id), I want to find the row corresponding to the year in which they played the most games. T

Question Mark in JavaScript

Question Mark in JavaScript

I came across the following linehsb.s = max != 0 ? 255 * delta / max : 0;What do the ? and : mean in this context? 1:It is called the Conditional Operator (which is a ternary operator).It has the form of: condition ? value-if-true : valu

Generate random string/characters in JavaScript

Generate random string/characters in JavaScript

I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9].What's the best way to do this with JavaScript? 1:I think this will work for you:function makeid() { var text = ""; var possible = "ABCDEFGHIJK

JavaScript get clipboard data on paste event (Cross browser)

JavaScript get clipboard data on paste event (Cross browser)

How can a web application detect a paste event and retrieve the data to be pasted?I would like to remove HTML content before the text is pasted into a rich text editor.Cleaning the text after being pasted afterwards works, but the problem i

What is the “-->” operator in C++?

What is the “-->” operator in C++?

After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated, I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.Here's the code:#include int mai

From an array of objects, extract value of a property as array

From an array of objects, extract value of a property as array

I have JavaScript object array with the following structure:objArray = [ { foo: 1, bar: 2}, { foo: 3, bar: 4}, { foo: 5, bar: 6} ];I want to extract an array containing the values of key foo, resulting in a value of [ 1, 3, 5 ].I have accom

How to clone or copy a list?

How to clone or copy a list?

What are the options to clone or copy a list in Python?Using new_list = my_list then modifies new_list every time my_list changes.Why is this? 1:With new_list = my_list, you don't actually have two lists. The assignment just copies the r

Can I generate script of a migration with EF code first and .net core

Can I generate script of a migration with EF code first and .net core

I'm building a MVC application with .Net Core and I need to generate the script of a migration.With EF6 I did run the command update-database -scriptbut when I try to do the same with .net Core is throwing the next exception: Update-Databa

Empirical data on the effects of immutability?

Empirical data on the effects of immutability?

In class today, my professor was discussing how to structure a class. The course primarily uses Java and I have more Java experience than the teacher (he comes from a C++ background), so I mentioned that in Java one should favor immutabili

How do you define a PHP include as a string?

How do you define a PHP include as a string?

I tried:$test = include 'test.php';But that just included the file normally 1:You'll want to look at the output buffering functions.//get anything that's in the output buffer, and empty the buffer$oldContent = ob_get_clean();//start buff

What is the default stack size in Node.js?

What is the default stack size in Node.js?

I know how to set the stack size thanks to:How can I increase the maximum call stack size in Node.jsBut, what is the default size? (ie how do I get to the PHP equivalent of phpinfo()) 1:The simple answer is that the default stack size i

Accessing members of a custom data type in Haskell

Accessing members of a custom data type in Haskell

Say I have the following custom data type and function in Haskell:data Person = Person { first_name :: String, last_name :: String, age :: Int } deriving (Eq, Ord, Show)If I

What does it mean to write to stdout in C?

What does it mean to write to stdout in C?

Does a program that writes to "stdout" write to a file? the screen? I don't understand what it means to write to stdout. 1:That means that you are printing output on the main output device for the session... whatever that may be. The u

How can I partition a Perl array into equal sized chunks?

How can I partition a Perl array into equal sized chunks?

I have a fixed-sized array where the size of the array is always in factor of 3.my @array = ('foo', 'bar', 'qux', 'foo1', 'bar', 'qux2', 3, 4, 5);How can I cluster the member of array such that we can getan array of array group by 3:$VAR =

Is a Java static block equivalent to a C# static constructor?

Is a Java static block equivalent to a C# static constructor?

What is the real difference between a C# static constructor and a Java static block?They both must be parameterless.They are both called only once, when the related class is first used.Am I missing something, or are they the same thing, jus

Header and footer with fixed position while content is scrollable?

Header and footer with fixed position while content is scrollable?

I'm trying to make a website where header and footer have fixed position while content scrolls in the middle. some contentI created what I thought would work but it doesn't. Here's jsFiddle with the whole thing.As you can see, part of conte

Why does CONNECT BY LEVEL on a table return extra rows?

Why does CONNECT BY LEVEL on a table return extra rows?

Using CONNECT BY LEVEL seems to return too many rows when performed on a table. What is the logic behind what's happening?Assuming the following table:create table a ( id number );insert into a values (1);insert into a values (2);insert int

Celery Task Chain and Accessing **kwargs

Celery Task Chain and Accessing **kwargs

I have a situation similar to the one outlined here, except that instead of chaining tasks with multiple arguments, I want to chain tasks that return a dictionary with multiple entries. This is -- very loosely and abstractly --- what I'm t

What does the '+new' mean in JavaScript?

What does the '+new' mean in JavaScript?

Looking through the jQuery source in the function now() I see the following:function now(){ return +new Date;}I've never seen the plus operator prepended to the new operator like this. What does it do? 1:Nicolás and Brian are right,

Python - Flask Default Route possible?

Python - Flask Default Route possible?

In Cherrypy it's possible to do this:@cherrypy.exposedef default(self, url, *suburl, **kwarg): passIs there a flask equivalent? 1:There is a snippet on Flask's website about a 'catch-all' route for flask. You can find it here.Basicall

Scale layer in Caffe

Scale layer in Caffe

I am looking through the Caffe prototxt for deep residual networks and have noticed the appearance of a "Scale" layer.layer { bottom: "res2b_branch2b" top: "res2b_branch2b" name: "scale2b_branch2b" type: "Scale" scale_param {

How to add in zero values into a time series in d3.js / JavaScript

How to add in zero values into a time series in d3.js / JavaScript

This is a problem that I have previously solved using php or (what I thought was) needlessly complex MySQL queries, but which I suddenly thought there must be a more elegant solution in JavaScript / d3.js.Imagine I have a data set of dates

PouchDB structure

PouchDB structure

i am new with nosql concept, so when i start to learn PouchDB, i found this conversion chart. My confusion is, how PouchDB handle if lets say i have multiple table, does it mean that i need to create multiple databases? Because from my und

Disable aspnet.friendlyurl's mobile redirect for tablets

Disable aspnet.friendlyurl's mobile redirect for tablets

My Website is responsive with Twitter Bootstrap and the desktop pages are designed for tablets and desktop. aspnet.friendlyUrls considers tablet devices as mobile and sends them to the ".Mobile.aspx" equivalent. How can I disable this beha