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Twig ternary operator, Shorthand if-then-else
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What is the difference between JSF, Servlet and JSP?
...r Pages)
JSP is a Java view technology running on the server machine which allows you to write template text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-kno...
Is there a way to provide named parameters in a function call in JavaScript?
...tructuring can be used to simulate named parameters. It would require the caller to pass an object, but you can avoid all of the checks inside the function if you also use default parameters:
myFunction({ param1 : 70, param2 : 175});
function myFunction({param1, param2}={}){
// ...function body....
A simple explanation of Naive Bayes Classification
... & part two being the confusion surrounding Training set.
In general all of Machine Learning Algorithms need to be trained for supervised learning tasks like classification, prediction etc. or for unsupervised learning tasks like clustering.
During the training step, the algorithms are taught...
What exactly is Heroku?
I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
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How to run travis-ci locally
... order to run the build. With jenkins you can download jenkins and run locally. Does travis offer something like this?
9 ...
How to repeat a string a variable number of times in C++?
...he link for a 'full' explanation
http://www.java-samples.com/showtutorial.php?tutorialid=458
cout.width(11);
cout.fill('.');
cout << "lolcat" << endl;
outputs
.....lolcat
share
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PostgreSQL: Difference between text and varchar (character varying)
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There is no difference, under the hood it's all varlena (variable length array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes t...
How to create an HTTPS server in Node.js?
...information came in very handy as I run a node.js tool (PDFJS) on top of a PHP app that was recently forced to run over https. The iframe was very unhappy to load my node.js app on an alternate, non-https port.
– lewsid
Oct 7 '14 at 16:12
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When should I use a composite index?
...olumn_A )
But it will not (at least not directly, maybe it can help partially if there are no better indices) help for queries that need
index( column_A, column_C )
Notice how column_B is missing.
In your original example, a composite index for two dimensions will mostly benefit queries that q...