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Rails: call another controller action from a controller
...use a redirect to that action :
redirect_to your_controller_action_url
More on : Rails Guide
To just render the new action :
redirect_to your_controller_action_url and return
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Reference: Comparing PHP's print and echo
... a simple action such as displaying the number zero. Whether you use echo or print, the same handler " ZEND_ECHO_SPEC_CONST_HANDLER" will be invoked. The handler for print does one thing before it invokes the handler for echo, it makes sure that the return value for print is 1, as follows:
ZVAL_L...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...n make real JNI calls into native code that contains special instructions for CAS
read more about CAS here http://en.wikipedia.org/wiki/Compare-and-swap
The sun.misc.Unsafe functionality of the host VM can be used to allocate uninitialized objects and then interpret the constructor invocation as an...
What does the slash mean in help() output?
What does the / mean in Python 3.4's help output for range before the closing parenthesis?
3 Answers
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Threads vs Processes in Linux
...I am suspicious, because it seems like threads could give a pretty big performance gain in some situations.
14 Answers
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How to verify if a file exists in a batch file?
...
You can use IF EXIST to check for a file:
IF EXIST "filename" (
REM Do one thing
) ELSE (
REM Do another thing
)
If you do not need an "else", you can do something like this:
set __myVariable=
IF EXIST "C:\folder with space\myfile.txt" set __myVari...
Difference between e.target and e.currentTarget
...
Ben is completely correct in his answer - so keep what he says in mind. What I'm about to tell you isn't a full explanation, but it's a very easy way to remember how e.target, e.currentTarget work in relation to mouse events and the display lis...
Redefining NULL
I'm writing C code for a system where address 0x0000 is valid and contains port I/O. Therefore, any possible bugs that access a NULL pointer will remain undetected and at the same time cause dangerous behaviour.
...
Storing Image Data for offline web application (client-side storage database)
...
Results Offline blob cache for PNG slippy maps
Testing
171 PNG files (total of 3.2MB)
Platforms tested: Chrome v24, FireFox 18, IE 10
Should also work with Chrome & FF for Android
Fetch from web server
using XHR2 (supported on almost all brow...
Which is more preferable to use: lambda functions or nested functions ('def')?
...ons but sometimes use nested functions that seem to provide the same behavior.
16 Answers
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