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What is the scope of variables in JavaScript?
...n have block scope in strict mode.
Overview
Scope is the region of the codebase over which an identifier is valid.
A lexical environment is a mapping between identifier names and the values associated with them.
Scope is formed of a linked nesting of lexical environments, with each level in the nest...
Differences between unique_ptr and shared_ptr [duplicate]
...f you create a unique_ptr<Derived>, then convert it to unique_ptr<Base>, and if Derived is virtual and Base is not, then the pointer will be deleted through the wrong type and there can be undefined behaviour. This can be fixed with an appropriate deleter-type in the unique_ptr<T, Del...
Getting all types that implement an interface
...ng able to activate a type would be when the type returned is derived from base but base is defined in a different assembly from that of derived, an assembly that the calling assembly does not reference.
So say we have:
Class A // in AssemblyA
Class B : Class A, IMyInterface // in AssemblyB
Class...
How to get hex color value rather than RGB value?
...
Here is the cleaner solution I wrote based on @Matt suggestion:
function rgb2hex(rgb) {
rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
function hex(x) {
return ("0" + parseInt(x).toString(16)).slice(-2);
}
return "#" + hex(rgb[1]) ...
Why can Java Collections not directly store Primitives types?
...sues: relatively efficient access would require keeping both arrays sorted based on the key order to allow binary searching, which in turn would make insertion and deletion inefficient unless the insertion/deletion is patterned such that inserted items are likely to end up where a previously deleted...
RabbitMQ and relationship between channel and connection
... is doing something similar to what I programmed my client to do (mine was based off the .Net client, but heavily modified).
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Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
...operation. push is array[++i] = foo, pop is bar = array[i--]. (But with 0-based arrays, array[i++] = foo and bar = array[--i] look still better). Another thing, I would hate it if someone added extra code between i++; and array[i] = foo;.
– Florian F
Jun 22 '...
json.net has key method?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How can I automatically deploy my app after a git push ( GitHub and node.js)?
...
I just published a node-based solution to your problem: node-cd
It consists in a simple node app running on your VPS that will receive Github post-receive Hooks and execute a the script you like (for example a shell script that will kill your app, ...
Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
...erating system user name from the kernel and using it as the allowed
database user name (with optional user name mapping). This method is
only supported on local connections.
Password authentication
The password-based authentication methods are md5 and password. These
methods operate sim...