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Detecting an undefined object property
...is the special value `undefined`");
}
To check if an object does not actually have such a property, and will therefore return undefined by default when you try and access it:
if(!o.hasOwnProperty('myProperty')) {
alert("myProperty does not exist");
}
To check if the value associated with an i...
How to determine function name from inside a function
...Bash Reference Manual:
FUNCNAME
An array variable containing the names of all shell functions currently in the execution call stack. The element with index 0 is the name of any currently-executing shell function. The bottom-most element (the one with the highest index) is "main". This variable exis...
How to avoid merge-commit hell on GitHub/BitBucket
...hes Before Merging
If you want to avoid merge commits, you need to ensure all commits are fast-forwards. You do this by making sure your feature branch rebases cleanly onto your line of development before a merge like so:
git checkout master
git checkout -b feature/foo
# make some commits
git re...
Favorite (Clever) Defensive Programming Best Practices [closed]
...in favor of Test Driven Development. If you catch errors quickly and externally, you don't need to muddy-up your code with defensive maneuvers, your code is DRY-er and you wind-up with fewer errors that you have to defend against.
As WikiKnowledge Wrote:
Avoid Defensive Programming, Fail Fast ...
What is the purpose of the EBP frame pointer register?
...sembly language and have noticed that the x86 code emitted by compilers usually keeps the frame pointer around even in release/optimized mode when it could use the EBP register for something else.
...
What is the difference between “git branch” and “git checkout -b”?
... does the same thing.
How do these two commands differ, if they differ at all?
7 Answers
...
JavaScript OR (||) variable assignment explanation
...otcha' which is that the last one will always get assigned even if they're all undefined, null or false. Setting something you know isn't false, null, or undefined at the end of the chain is a good way to signal nothing was found.
– Erik Reppen
Aug 29 '11 at 1...
Why are only a few video games written in Java? [closed]
...d port it, that takes a lot of effort (and of course, the license needs to allow it).
Also, a lot of legacy code already exists in C++. If code from previous projects can be reused (say, if you're writing a sequel), that counts even more in favor of sticking with the same language, instead of rewri...
Right to Left support for Twitter Bootstrap 3
...
in every version of bootstrap,you can do it manually
set rtl direction to your body
in bootstrap.css file, look for ".col-sm-9{float:left}" expression,change it to float:right
this do most things that you want for rtl
...
SQL Server Management Studio, how to get execution time down to milliseconds
...
The part regarding the Properties window is really the answer to this thread. "Elapsed Time" is sitting there staring you in the face.
– Eric
Jan 20 '15 at 23:32
...