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&& (AND) and || (OR) in IF statements
... the expressions don't have side effects, short-circuit semantics are logically equivalent to complete evaluation. That is, if A is true, you know A||B is true without having to evaluate B. The only time it will make a difference is if an expression has side effects. As for other operators, you can ...
Get the last non-empty cell in a column in Google Sheets
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I am not really bothered about eloquence in this case as long as it works like a charm (which it does) - thanks a lot Sam!
– MichaelS
Nov 17 '11 at 9:46
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What is an OS kernel ? How does it differ from an operating system? [closed]
...ernel is an operating system in that sense.
The end-user definition is usually something around "a software package that provides a desktop, shortcuts to applications, a web browser and a media player". A kernel doesn't match that definition.
So for an end-user a Linux distribution (say Ubuntu) is...
Immutable class?
...ot be changed after instantiation.
However, there must be care taken that all objects that are referenced by the object must be immutable as well, or it could be possible to change the state of the object.
For example, allowing an reference to an array or ArrayList to be obtained through an gette...
What is the worst gotcha in C# or .NET? [closed]
...return MyVar; }
}
Blammo. Your app crashes with no stack trace. Happens all the time.
(Notice capital MyVar instead of lowercase myVar in the getter.)
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How do I hide an element on a click event anywhere outside of the element?
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This works fine.. but When I click over the button which calls the popup, then popup comes and then again vanishes immediately. What to do for that as the document is taking two actions at a time. to call the popup on body click and to fadeOut the popup on bodyClick
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How to do exponentiation in clojure?
...d recommend using this rather than going via Java interop since it handles all the Clojure arbitrary-precision number types correctly. It is in namespace clojure.math.numeric-tower.
It's called expt for exponentiation rather than power or pow which maybe explains why it's a bit hard to find ... any...
Correct way to define Python source code encoding
...f you want to be 100% python-docs-recommendation-compatible.
More specifically, you need to use whatever is recognized by Python and the specific editing software you use (if it needs/accepts anything at all). E.g. the coding form is recognized (out of the box) by GNU Emacs but not Vim (yes, withou...
Getting an “ambiguous redirect” error
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Bash can be pretty obtuse sometimes.
The following commands all return different error messages for basically the same error:
$ echo hello >
bash: syntax error near unexpected token `newline`
$ echo hello > ${NONEXISTENT}
bash: ${NONEXISTENT}: ambiguous redirect
$ echo hello ...
How do I put an already-running process under nohup?
... stay in your current shell's process tree until you exit your shell) This allows you to see all the jobs that this shell started." (from [quantprinciple.com/invest/index.php/docs/tipsandtricks/unix/…)
– Dr. Jan-Philip Gehrcke
Mar 17 '11 at 13:46
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