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IOS: create a UIImage or UIImageView with rounded corners
...IGraphicsGetCurrentContext()];
UIImage *roundedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return roundedImage;
}
Swift 3
func makeRoundedImage(image: UIImage, radius: Float) -> UIImage {
var imageLayer = CALayer()
imageLayer.frame = CGRect(...
How can I delete a newline if it is the last character in a file?
...
You can do this with head from GNU coreutils, it supports arguments that are relative to the end of the file. So to leave off the last byte use:
head -c -1
To test for an ending newline you can use tail and wc. The following example saves the resul...
How to convert a ruby hash object to JSON?
...ndefined method `to_json' for {:make=>"bmw", :year=>"2003"}:Hash
# from (irb):11
# from /usr/bin/irb:12:in `<main>'
require 'json'
# => true
car.to_json
# => "{"make":"bmw","year":"2003"}"
As you can see, requiring json has magically brought method to_json to our Hash.
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Why does NULL = NULL evaluate to false in SQL server
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SQL NULL is not any different from IEEE floating point NaN, where you also have (NaN == NaN) == false && (NaN != Nan) == false && (NaN < NaN) == false && ... - because, well, if it's not a number, you just can't say much about i...
Getting new Twitter API consumer and secret keys
...ens for an existing application, go to My applications (which is available from the menu in the upper-right).
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Semicolons superfluous at the end of a line in shell scripts?
...ne are not superfluous and are definitely not the same thing as new lines.
From the Bash Reference Manual
Commands separated by a ‘;’ are executed sequentially; the shell waits
for each command to terminate in turn. The return status is the exit
status of the last command executed.
Commands th...
How do I add a path to PYTHONPATH in virtualenv
... a path to the PYTHONPATH environment variable, that would be only visible from a particular virtualenv environment.
5 Ans...
MFC CSplitterWnd的用法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...1);
// COneView and CAnotherView are user-defined views derived from CMDIView
m_wndSplitter.CreateView(0,0,RUNTIME_CLASS(COneView), CSize(0,0),
pContext);
m_wndSplitter.CreateView(1,0,RUNTIME_CLASS(CAnotherView), CSize(0,0),
pContext);
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Why does C++ not allow inherited friendship?
...ationship).
But do I trust the people who write classes that are derived from Bar?
Not really. So they should not inherit friendship.
Any change in the internal representation of a class will require a modification to anything that is dependent on that representation. Thus all members of a class ...
SSH Key - Still asking for password and passphrase
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See this github doc to convert remote's URL from https to ssh. To check if remote's URL is ssh or https, use git remote -v. To switch from https to ssh: git remote set-url origin git@github.com:USERNAME/REPOSITORY.git
– Manavalan Gajapathy
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