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MISCONF Redis is configured to save RDB snapshots
...from redis background save FAQ)
echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
sysctl vm.overcommit_memory=1
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Formatting numbers (decimal places, thousands separators, etc) with CSS
...with CSS?
That is: decimal places, decimal separator, thousands separator, etc.
10 Answers
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Short circuit Array.forEach like calling break
...cause some returns true as soon as any of the callbacks, executed in array order, return true, short-circuiting the execution of the rest.
some, its inverse every (which will stop on a return false), and forEach are all ECMAScript Fifth Edition methods which will need to be added to the Array.proto...
Indent multiple lines quickly in vi
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set shiftwidth=4 "Indent by 4 spaces when using >>, <<, == etc.
set softtabstop=4 "Indent by 4 spaces when pressing <TAB>
set autoindent "Keep indentation from previous line
set smartindent "Automatically inserts indentation in some cases
set cindent "Like s...
How to sort an array of objects by multiple fields?
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Here is a simple functional approach. Specify sort order using array. Prepend minus to specify descending order.
var homes = [
{"h_id":"3", "city":"Dallas", "state":"TX","zip":"75201","price":"162500"},
{"h_id":"4","city":"Bevery Hills", "state":"CA", "zip":"90210",...
How is Node.js inherently faster when it still relies on Threads internally?
...ld be only what's needed" I get the impression these should be of the same order. Closures are not cheap, the runtime will have to keep the whole call tree of the single-threaded application in memory ("emulating stacks" so to say) and will be able to clean up when a leaf of tree gets released as th...
What exactly is a Context in Java? [duplicate]
...local variables, state of other classes, state of the current environment, etcetera.
In some API's you see this name back in an interface/class, e.g. Servlet's ServletContext, JSF's FacesContext, Spring's ApplicationContext, Android's Context, JNDI's InitialContext, etc. They all often follow the F...
How to set Sqlite3 to be case insensitive when string comparing?
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----------------
b
sqlite> select Text_Value from Test order by Text_Value;
Text_Value
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A
b
C
sqlite> select Text_Value from Test order by Text_Value desc;
Text_Value
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C
b ...
Returning first x items from array
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@ESCOBAR: associative arrays don't necessarily have an order, they only map keys to values; so "values 3 to 7" doesn't really make sense anyway …
– knittl
Jun 6 '14 at 15:45
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Rails Object to hash
...tive => true
}
To go a bit further, you could override that method in order to customize the way your attributes appear, by doing something like this :
class Post < ActiveRecord::Base
def as_json(*args)
{
:name => "My name is '#{self.name}'",
:post_number => "Post ##...