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Get underlying NSData from UIImage
... is slightly lossy if your original was PNG. It should be okay to pick one based on the way the image will be displayed and the format you expect to be provided. If you happen to be using PNG in and want PNG out, you should get a good file size and almost identical data, special PNG chunks aside.
If...
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
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Latest findings...
https://gist.github.com/luislavena/f064211759ee0f806c88
Most importantly...download
https://raw.githubusercontent.com/rubygems/rubygems/master/lib/rubygems/ssl_certs/rubygems.org/AddTrustExternalCARoot-2048.pem
Figure out where to stick it
C:\>gem which r...
ActionController::InvalidAuthenticityToken
...k trace, you get a line looking like Request origin does not match request base_url.
When using a reverse proxy (such as nginx) as receiver for HTTPS request and transmitting the request unencrypted to the backend (such as the Rails app), the backend (more specifically: Rack) expects some headers wi...
Django template how to look up a dictionary value with a variable
...my App with below content did the job
# coding=utf-8
from django.template.base import Library
register = Library()
@register.filter
def get_item(dictionary, key):
return dictionary.get(key)
usage is like what culebrón said :
{{ mydict|get_item:item.NAME }}
...
How can I specify working directory for popen
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Cropping an UIImage
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You can make a UIImage category and use it wherever you need. Based on HitScans response and comments bellow it.
@implementation UIImage (Crop)
- (UIImage *)crop:(CGRect)rect {
rect = CGRectMake(rect.origin.x*self.scale,
rect.origin.y*self.scale,
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What is the significance of ProjectTypeGuids tag in the visual studio project file
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</PropertyGroup>
But for some special projects (such as some database projects) and projects lacking a file (such as Web Site projects), the project type is stored also in the solution file:
Microsoft Visual Studio Solution File, Format Version 10.00
# Visual Studio 2008
Project("{F184B08...
map vs. hash_map in C++
...les can deliver.
Many people really do want hash tables, however, so hash-based STL associative containers have been a common extension for years. Consequently, they added unordered_map and such to later versions of the C++ standard.
...
ASP.NET MVC partial views: input name prefixes
...f type HtmlHelper<TModel> had a new property ViewData, which hid the base model's. With that, I replaced new ViewDataDictionary(helper.ViewData) with new ViewDataDictionary(((HtmlHelper)helper).ViewData). Do you see any problem with that?
– Pat Newell
A...
Remove the last line from a file in Bash
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64
To remove the last line from a file without reading the whole file or rewriting anything, you c...