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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...ke(0, 0, width, height), imageRef);
CGContextRelease(context);
// Now your rawData contains the image data in the RGBA8888 pixel format.
NSUInteger byteIndex = (bytesPerRow * y) + x * bytesPerPixel;
for (int i = 0 ; i < count ; ++i)
{
CGFloat alpha = ((CGFloat) rawDat...
moving committed (but not pushed) changes to a new branch after pull
... (the current branch) without switching the current branch to new-work. So now new-work contains all the new commits. Then the reset moves the current branch (still master) back to origin/master.
– Mark Longair
Jan 21 '15 at 22:01
...
How to split one string into multiple strings separated by at least one space in bash shell?
...individual elements:
sentence="this is a story"
stringarray=($sentence)
now you can access individual elements directly (it starts with 0):
echo ${stringarray[0]}
or convert back to string in order to loop:
for i in "${stringarray[@]}"
do
:
# do whatever on $i
done
Of course looping thr...
How do I update a formula with Homebrew?
...
This is indeed the correct way now. The old ways will still work if use append --force.
– mxcl
Feb 28 '12 at 17:37
2
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How to install packages offline?
...env2.
python -m virtualenv myenv2
cd myenv2
source bin/activate
cd -
ls
now you can go to your offline folder where your requirements.txt and tranferred_packages folder are in there. download the packages with following code and put all of them to tranferred_packages folder.
pip download -r requ...
Spring Boot - Cannot determine embedded database driver class for database type NONE
...taSourceAutoConfiguration.class}) in my main class. But after putting this now I am getting error Parameter 0 of constructor in org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration required a bean of type 'javax.sql.DataSource' that could not be found.. Please help.
...
Check whether a variable is a string in Ruby
...
Without knowing the question's intent, I'd say for most real-world programming situations, is_a? is actually the more appropriate idiom to use (and often a duck-typing check like Andrew Grimm mentions is even better). A strict class c...
How to get a ListBox ItemTemplate to stretch horizontally the full width of the ListBox?
...
@ Agile Jedi, do you know of a solution when you DO have custom ListBox Items? Running into that issue myself.
– eoldre
May 9 '11 at 15:35
...
How to insert a newline in front of a pattern?
...
sed $'s/regexp/\\\n/g'
What happens here is: the entire sed command is now a C-style string, which means the backslash that sed requires to be placed before the new line literal should now be escaped with another backslash. Though more readable, in this case you won't be able to do shell string...
Git: Ignore tracked files
...e "here's a base template of a file where you'd store your credentials in, now never commit it".
– Jon V
Jan 20 '17 at 22:01
6
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