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What is a bus error?
...r when your processor cannot even attempt the memory access requested, typically:
using a processor instruction with an address that does not satisfy its alignment requirements.
Segmentation faults occur when accessing memory which does not belong to your process, they are very common and are ty...
Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]
...me others it's ec2-user (or admin on some Debians, according to Bogdan Kulbida's answer)(can also be root, fedora, see below)
Trying to connect the wrong host. Is that the right host you are trying to log in to?
Note that 1. will also happen if you have messed up the /home/<username>/.ssh/a...
Expression Versus Statement
...was one unit of execution, a thing that you did. The only reason it wasn't called a "line" was because sometimes it spanned multiple lines. An expression on its own couldn't do anything... you had to assign it to a variable.
1 + 2 / X
is an error in FORTRAN, because it doesn't do anything. You ha...
How can I add a boolean value to a NSDictionary?
...mber object initialized to contain a
// given value, treated as a BOOL.
- (id)initWithBool:(BOOL)value
and:
// Returns the receiver’s value as a BOOL.
- (BOOL)boolValue
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Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
...ns. e.g Eclipse, Visual Studio.
A Library is a chunk of code that you can call from your own code, to help you do things more quickly/easily. For example, a Bitmap Processing library will provide facilities for loading and manipulating bitmap images, saving you having to write all that code for you...
VIM + JSLint?
...ow the intructions from JSLint web-service + VIM integration or do what I did:
Download http://jslint.webvm.net/mylintrun.js and http://www.jslint.com/fulljslint.js
and put them in a directory of your choice.
Then add the following line to the beginning of mylintrun.js:
var filename= arguments[0...
Circular (or cyclic) imports in Python
... then executes the code in the module. It does not
return control to the calling module until the execution has completed.
If a module does exist in sys.modules then an import simply returns that
module whether or not it has completed executing. That is the reason why
cyclic imports may r...
How to get JS variable to retain value after page refresh? [duplicate]
...ge, but this can be overcome by using JSON.stringify and JSON.parse. Technically, whenever you call .setItem(), it will call .toString() on the value and store that.
MDN's DOM storage guide (linked below), has workarounds/polyfills, that end up falling back to stuff like cookies, if localStorage is...
LINQ Ring: Any() vs Contains() for Huge Collections
...s will use IEquatable<T> or the Equals() method, which might be overridden.
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Program only crashes as release build — how to debug?
...ion. In debug mode, variables and pointers get initialized to zero automatically but in release mode they do not. Therefore, if you have code like this
int* p;
....
if (p == 0) { // do stuff }
In debug mode the code in the if is not executed but in release mode p contains an undefined value, whic...