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Traits vs. interfaces
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An interface defines a set of methods that the implementing class must implement.
When a trait is use'd the implementations of the methods come along too--which doesn't happen in an Interface.
That is the biggest difference.
From the Horizontal ...
Change select box option background color
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Yes you can set this by oppisite way using this,
option:not(:checked) { }
check this demo jsFiddle
HTML
<select>
<option val="">Please choose</option>
<option val="1">Option 1</option>
<o...
Removing whitespace from strings in Java
...u are looking to replace all whitespace with a single space (or some other set of characters). If you have consecutive spaces, using \\s it will replace each whitespace character with the provided characters given. Given \\s+ it will replace each set of whitespaces with a single replacement string....
Changing the color of an hr element
...SS Facts”, published recently by SitePoint, mentions that <hr> can set its border-color to its parent's color if you specify hr { border-color: inherit }.
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Redirecting stdout to “nothing” in python
... Sure, just save a reference to the original sys.stdout and set it back after. For example old_stdout = sys.stdout before any of the other code, then sys.stdout = old_stdout when you are done.
– Andrew Clark
Aug 20 '14 at 21:05
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Why is this program valid? I was trying to create a syntax error
...routine, which happens to be exit(0), at which point the program exits and sets errorlevel to 0. Nothing else is executed, so no more runtime errors are reported.
You will notice that if you change exit(0) to something like print "Hello world!" you do get an error:
Can't locate object method "Synt...
nodejs how to read keystrokes from stdin
...f you switch to raw mode:
var stdin = process.openStdin();
require('tty').setRawMode(true);
stdin.on('keypress', function (chunk, key) {
process.stdout.write('Get Chunk: ' + chunk + '\n');
if (key && key.ctrl && key.name == 'c') process.exit();
});
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What is the difference between linear regression and logistic regression?
...s may be positive or negative. In this case you normally have an input dataset with a lot of examples and the the output value for each one of them. The goal is to be able to fit a model to this data set so you are able to predict that output for new different/never seen elements. Following is the c...
How to effectively work with multiple files in Vim
...pen a new file, I use
:e ../myFile.pl
with enhanced tab completion (put set wildmenu in your .vimrc).
Note: you can also use :find which will search a set of paths for you, but you need to customize those paths first.
Switching
To switch between all open files, I use
:b myfile
with enhanc...
How to see query history in SQL Server Management Studio
... Ed Harper's answer - though it isn't free in SQL Server 2012+. Or you can set up some lightweight tracing filtered on your login or host name (but please use a server-side trace, not Profiler, for this).
As @Nenad-Zivkovic commented, it might be helpful to join on sys.dm_exec_query_stats and ord...