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Cookies vs. sessions
...a couple of months ago. For the sake of creating a login system for my website, I read about cookies and sessions and their differences (cookies are stored in the user's browser and sessions on the server). At that time, I preferred cookies (and who does not like cookies?!) and just said: "who cares...
Elements order in a “for (… in …)” loop
...ements in the order they are declared? Is there a browser which doesn't do it in order?
The object I wish to use will be declared once and will never be modified.
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.NET unique object identifier
...us value A will be changed to value B, so as far as safe code is concerned it's still a unique ID.
If the objects involved are under your control, you could create a mapping using weak references (to avoid preventing garbage collection) from a reference to an ID of your choosing (GUID, integer, wha...
Declaring Multiple Variables in JavaScript
In JavaScript, it is possible to declare multiple variables like this:
17 Answers
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How do I return multiple values from a function? [closed]
The canonical way to return multiple values in languages that support it is often tupling .
14 Answers
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Is null check needed before calling instanceof?
...on is
not null and the reference could be
cast to the ReferenceType
without raising a ClassCastException.
Otherwise the result is false."
So if the operand is null, the result is false.
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Change type of varchar field to integer: “cannot be cast automatically to type integer”
...ertain field contains the type " character varying ". I'm trying to change it to " Integer " but it gives an error that casting is not possible.
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What is the native keyword in Java for?
While playing this puzzle (It's a Java keyword trivia game), I came across the native keyword.
10 Answers
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C# vs C - Big performance difference
... could try to accumulate the square root values into an accumulator, print it out at the end of the method, and see what's going on.
Edit : see Jalf's answer below
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How to detect responsive breakpoints of Twitter Bootstrap 3 using JavaScript?
Currently , Twitter Bootstrap 3 have the following responsive breakpoints: 768px, 992px and 1200px, representing small, medium and large devices respectively.
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