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Hash String via SHA-256 in Java
...ing in Java. Looking at their documentation I can't seem to find any good examples of what I want to do. Can anybody here help me out?
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Increasing (or decreasing) the memory available to R processes
...get'' field and after the closing
quotes around the location of the R
executible, add
--max-mem-size=500M
as shown in the figure below. You may
increase this value up to 2GB or the
maximum amount of physical RAM you
have installed.
If you get the error that R cannot
allo...
How to create an alias for a command in Vim?
Vim is my preferred text editor when I program, and thus I always run into a particularly annoying issue.
7 Answers
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Resize UIImage by keeping Aspect ratio and width
...for resizing the image by keeping aspect ratio. These functions uses the fixed points(Width and Height) for RECT while resizing. But in my project, I need to resize the view based on the Width alone, Height should be taken automatically based on the aspect ratio.
anyone help me to achieve this.
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How to save a Python interactive session?
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IPython is extremely useful if you like using interactive sessions. For example for your use-case there is the %save magic command, you just input %save my_useful_session 10-20 23 to save input lines 10 to 20 and 23 to my_useful_session....
How to fix Array indexOf() in JavaScript for Internet Explorer browsers
...ou have worked with JavaScript at any length you are aware that Internet Explorer does not implement the ECMAScript function for Array.prototype.indexOf() [including Internet Explorer 8]. It is not a huge problem, because you can extend the functionality on your page with the following code.
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Are HTTP headers case-sensitive?
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Header names are not case sensitive.
From RFC 2616 - "Hypertext Transfer Protocol -- HTTP/1.1", Section 4.2, "Message Headers":
Each header field consists of a name followed by a colon (":") and the field value. Field names are case-insensitive.
The updating RFC 7230 does not li...
Am I immoral for using a variable name that differs from its type only by case?
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Android SDK manager won't open
... something wrong in the code that finds your Java path.
This is how you fix it:
Open up tools/android.bat in your favorite text editor
Search for this piece of code:
set java_exe=
call lib\find_java.bat
if not defined java_exe goto :EOF
Replace it with this:
set java_exe=D:\Program Files\Java...
Add a reference column migration in Rails 4
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Rails 4.x
When you already have users and uploads tables and wish to add a new relationship between them.
All you need to do is: just generate a migration using the following command:
rails g migration AddUserToUploads user:refere...