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structure vs class in swift language
...e is changed, the instance referenced by both variables is updated. Bob is now Sue, everywhere that Bob was ever referenced.
class SomeClass {
var name: String
init(name: String) {
self.name = name
}
}
var aClass = SomeClass(name: "Bob")
var bClass = aClass // aClass and bClass...
How to get the original value of an attribute in Rails
...flow.com/a/50973808/9359123
Appending _was is deprecated in rails 5.1, now you should append _before_last_save
Something like:
before_save object
do_something_with object.name_before_last_save
end
Will return the name value before your last save at database (works for save and create)
The...
Asynchronous Requests with Python requests
...
async is now an independent module : grequests.
See here : https://github.com/kennethreitz/grequests
And there: Ideal method for sending multiple HTTP requests over Python?
installation:
$ pip install grequests
usage:
build a s...
Generating Random Passwords
...
Didn't know that the Framework has such a method! Awesome! Will swap out my current code for this!
– FryHard
Sep 11 '08 at 4:19
...
define() vs. const
...
echo FOO; // BAR
echo foo; // BAR
So, that was the bad side of things. Now let's look at the reason why I personally always use const unless one of the above situations occurs:
const simply reads nicer. It's a language construct instead of a function and also is consistent with how you define ...
Codesign error: Certificate identity appearing twice
... date, right click and select DELETE.
Restart Xcode if you haven't.
Works now. :)
Happy Coding.
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JavaScript inheritance: Object.create vs new
... objects from this
var myObject = Object.create( base );
// myObject will now link to "base" via the prototype chain internally
So this is another concept, a more "object oriented" way of inherting. There is no "constructor function" out of the box using Object.create() for instance. But of cours...
Practical non-image based CAPTCHA approaches?
... twist on this that I use. Make the hidden value an encrypted time set to now. Upon post back, verify that between 10 seconds and 10 minutes has elapsed. This foils tricksters who would try to plug in some always-valid value.
– Tim Scott
Feb 7 '09 at 22:41
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iOS: how to perform a HTTP POST request?
...pple.com/library/mac/#documentation/Cocoa/Conceptual/… although if you know enough to mess around with different threads, you'll probably be fine.
– Aaron Brown
May 3 '12 at 21:53
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How do I get the path to the current script with Node.js?
...the module or included script. If you are writing a plugin which needs to know the path of the main script it is:
require.main.filename
or, to just get the folder name:
require('path').dirname(require.main.filename)
sha...