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test a file upload using rspec - rails
...::UploadedFile.new("path/to/file.ext", "mime/type")
*NOTE: My example is based on Sinatra, which extends Rack, but should work with Rails, which also uses Rack, TTBOMK
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...
convert UIImage to NSData
...{
UIImage *snapshot = self.myImageView.image;
[self encodeImageToBase64String:snapshot];
}
call this method for image convert in base 64
-(NSString *)encodeImageToBase64String:(UIImage *)image
{
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:N...
Where can I find Android source code online? [closed]
...or AOSP: cs.android.com. There's also the
Android official source browser (based on Gitiles) has a web view of many of the different parts that make up android. Some of the projects (such as Kernel) have been removed and it now only points you to clonable git repositories.
To get all the code loca...
List comprehension: Returning two (or more) items for each item
...
Double list comprehension:
[f(x) for x in range(5) for f in (f1,f2)]
Demo:
>>> f1 = lambda x: x
>>> f2 = lambda x: 10*x
>>> [f(x) for x in range(5) for f in (f1,f2)]
[0, 0, 1, 10, 2, 20, 3, 30, 4, 40]
...
Set element focus in angular way
...
This solution is much more 'angular way' than id-based hack above.
– setec
Jul 27 '16 at 14:54
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HTML5 Canvas Resize (Downscale) Image High Quality?
...process (see demo at bottom).
Here is code for adding sharpen filter (it's based on a generic convolution filter - I put the weight matrix for sharpen inside it as well as a mix factor to adjust the pronunciation of the effect):
Usage:
sharpen(context, width, height, mixFactor);
The mixFactor is a ...
I need to securely store a username and password in Python, what are my options?
...s
from pbkdf2 import PBKDF2
from Crypto.Cipher import AES
import os
import base64
import pickle
### Settings ###
saltSeed = 'mkhgts465wef4fwtdd' # MAKE THIS YOUR OWN RANDOM STRING
PASSPHRASE_FILE = './secret.p'
SECRETSDB_FILE = './secrets'
PASSPHRASE_SIZE = 64 # 512-bit passphrase
KEY_SIZE = 32 ...
How to center a button within a div?
...an active answer, however Flexbox would be the correct approach now.
Live Demo
Vertical and horizontal alignment.
#wrapper {
display: flex;
align-items: center;
justify-content: center;
}
Just horizontal (as long as the main flex axis is horizontal which is default)
#wrapper {
display:...
Convert a series of parent-child relationships into a hierarchical tree?
...re, that means internally no recursion function calls are done.
The event based ListDecorator allows you to modify the output specifically and to provide multiple type of lists for the same data structure. It's even possible to change the input as the array data has been encapsulated into TreeNode....
List of Delphi language features and version in which they were introduced/deprecated
...form (but without additional text for deprecated)
Variant is no longer based on COM but changed to be CLX compatible, COM based variant renamed to OLEVariant
Typed constants cannot be assigned to (Override with {$J+})
Enumerated types can be assigned an explicit value (cf C++);
Interface pr...