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JavaScript checking for null vs. undefined and difference between == and ===
...hey're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `false`)
}
This is defined by ToBoolean in the spec.
...and what is the difference between the null and undefined?
They're both values usually used to i...
Truly understanding the difference between procedural and functional
I'm really having a hard time understanding the difference between procedural and functional programming paradigms.
9 A...
What is the “Execute Around” idiom?
...e Around" idiom (or similar) I've been hearing about?
Why might I use it, and why might I not want to use it?
8 Answers
...
When to use RDLC over RDL reports?
I have been studying SSRS 2005 / 2008 in the past weeks and have created some server side reports. For some application, a colleague suggested that I look into RDLC for that particular situation. I am now trying to get my head around the main difference between RDL and RDLC.
...
Difference between innerText, innerHTML, and childNodes[].value?
What is the difference between innerHTML , innerText and childNodes[].value in JavaScript?
11 Answers
...
What's the difference between & and && in MATLAB?
What is the difference between the & and && logical operators in MATLAB?
7 Answers
...
What is Dependency Injection and Inversion of Control in Spring Framework?
"Dependency Injection" and "Inversion of Control" are often mentioned as the primary advantages of using the Spring framework for developing Web frameworks
...
Regular Expressions: Is there an AND operator?
...an use the | (pipe?) to represent OR , but is there a way to represent AND as well?
12 Answers
...
The definitive guide to form-based website authentication [closed]
...tion. The sections below will deal with patterns for sound practical auth, and how to avoid the most common security pitfalls.
To HTTPS or not to HTTPS?
Unless the connection is already secure (that is, tunneled through HTTPS using SSL/TLS), your login form values will be sent in cleartext, which al...
What's the difference between an inverted index and a plain old index?
... two types denote directionality. One takes you forward through the index, and the other takes you backward (the inverse) through the index. That's it. There's no mystery to uncover here. Otherwise the two types are identical, it's just a question of what information you have, and as a result what ...