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Rails params explained?
...
Params contains the following three groups of parameters:
User supplied parameters
GET (http://domain.com/url?param1=value1&param2=value2 will set params[:param1] and params[:param2])
POST (e.g. JSON, XML will automatically be parsed and stored in params...
Threads vs Processes in Linux
...ess_struct; if a bunch of task_structs are linked together by their thread_group list, then they're the same "process" to userspace. There's a little bit of special handling of "thread"s, e.g. all sibling threads are stopped on fork and exec, and only the "main" thread shows up in ls /proc. Every th...
What's the best UML diagramming tool? [closed]
...ce distracting.
Otherwise i find the Topcased an interesting project (or group of projects). Last I used it it still had some bugs, but it worked, and seems to have evolved nicely since. Works great on any Eclipse-enabled platform. Free as in speech and beer :)
As for the diagramming tool Dia, it...
How to format numbers as currency string?
...ditional support of any number of decimals [0 .. n] and the size of number groups [0 .. x]:
/**
* Number.prototype.format(n, x)
*
* @param integer n: length of decimal
* @param integer x: length of sections
*/
Number.prototype.format = function(n, x) {
var re = '\\d(?=(\\d{' + (x || 3) + ...
How to remove jar file from local maven repository which was added with install:install-file?
... The directory structure under .m2/repository is organized by Maven group ID, so you can just delete the subdirectory corresponding to the artifact you want to remove.
– Kevin Krumwiede
Aug 23 '16 at 19:33
...
How does Facebook disable the browser's integrated Developer Tools?
...against a specific social engineering attack.
If you ended up in the test group and are annoyed by this, sorry.
I tried to make the old opt-out page (now help page) as simple as possible while still being scary enough to stop at least some of the victims.
The actual code is pretty similar to @joe...
space between divs - display table-cell
... @Jongosi According to spec: The effect of position: relative on table-*-group, table-row, table-column, table-cell, and table-caption elements is undefined.
– Hashem Qolami
Jun 16 '14 at 21:49
...
Facebook database design?
...users and 2.5 million friend connections - not even trying to bother about group permissions and likes and wall posts - it quickly turned out that this approach is flawed. So I've spent some time searching the web on how to do it better and came across this official Facebook article:
TAO: Facebook...
Create RegExps on the fly using string variables
...tart-of-string token, not a negation. ^ is only a negation in [] character groups. There are also negative lookaheads (?!...), but there are problems with that in JScript so you should generally avoid it.
You might try matching ‘everything up to’ the string, and using a function to discard any ...
Error handling principles for Node.js + Express.js applications?
...plication state and is analogous to wrapping main in try-catch.
Domains - grouping events logically
As part of dealing with this problem of exceptions making applications fall over, domains allow the developer to take, for example the Express.js application, and try and close off connections sensi...