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How to design a multi-user ajax web application to be concurrently safe
...your webservers, database & caching hardware, # of user, # of objects, etc. Not an easy decision to make.
For each atomic artifact have:
an application-wide unique-id
an incrementing version-id
a locking mechanism for write-access (mutex maybe)
a small history or "changelog" inside a ringbuffe...
What are fixtures in programming?
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I think PHP-unit tests have very good explaining of this:
One of the most time-consuming parts of writing tests is writing the
code to set the world up in a known state and then return it to its
original state when the test i...
How to check whether an object is a date?
...hecks whether the parameter was not a falsy value (undefined, null, 0, "", etc..)
Object.prototype.toString.call(date) returns a native string representation of the given object type - In our case "[object Date]". Because date.toString() overrides its parent method, we need to .call or .apply the me...
Meaning of $? (dollar question mark) in shell scripts
... in BASH are 1,2,*,# ( Normally seen in echo command as $1 ,$2 , $* , $# , etc., ) .
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Stretch and scale a CSS image in the background - with CSS only
I want that my background image stretch and scale depending on the browser viewport size.
22 Answers
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Why am I getting an OPTIONS request instead of a GET request?
...y could manipulate data on your server through requests (POST, PUT, DELETE etc). In these situations, like when using custom headers, the browser is just checking with the server first that the server is willing to accept the request before sending it as sending unsolicited requests to the server co...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
...he the solution which is answered by Igor here http://forum.nginx.org/read.php?2,1612,1627#msg-1627
Yes. Or you may combine SSL/non-SSL servers in one server:
server {
listen 80;
listen 443 default ssl;
# ssl on - remember to comment this out
}
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Recommendation for compressing JPG files with ImageMagick
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Just saying for those who using Imagick class in PHP:
$im -> gaussianBlurImage(0.8, 10); //blur
$im -> setImageCompressionQuality(85); //set compress quality to 85
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What is Python used for? [closed]
...heritance. Everything is an object (including classes, functions, modules, etc), in the sense that they can be passed around as arguments, have methods and attributes, and so on.
Python is multipurpose: it is not specialised to a specific target of users (like R for statistics, or PHP for web progra...
What is the _snowman param in Ruby on Rails 3 forms for?
...result, it's extremely common for Ruby applications (and PHP applications, etc. etc.) to exhibit this user-facing bug, and therefore extremely common for users to try to change the encoding as a palliative measure.
All that said, when I wrote this patch, I didn't realize that the name of the parame...