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Rails 4 - Strong Parameters - Nested Objects
... @nayiaw i also get the unpermitted message but adding permit! raises this error NoMethodError (undefined method permit!' for #<Array:0x007f80cb71ea00>):`
– wuliwong
Apr 17 '18 at 22:17
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PHP 5: const vs static
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ClassName::$my_var = 20; // now equals 20
ClassName::MY_CONST = 20; // error! won't work.
Public, protected, and private are irrelevant in terms of consts (which are always public); they are only useful for class variables, including static variable.
public static variables can be accessed a...
How do I prevent 'git diff' from using a pager?
...pager in an alias, you have to prefix the command with it, and to avoid an error, you have to make an alias like this: git config alias.foo '!git --no-pager foo'. Somewhat confusing. Simply aliasing to '--no-pager foo' won't work.
– Jim Stewart
Oct 10 '13 at 20...
Unable to load SOS in WinDbg
... only contains the process memory.
So the message " No runnable debuggees error in 'g' " is logical in your case since the process is not running.
Concerning loading the correct version of SOS use the following command depending on the .NET version.
.NET 4 and higher .loadby sos
.NET 3.5 and 2
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Can you write virtual functions / methods in Java?
...de it
} //you would get a compile time error.
abstract void jump(); //jump() is a "pure" virtual function
}
class MyDog extends Dog{
void jump(){
System.out.println("boing"); //here jump() is be...
In Objective-C why should I check if self = [super init] is not nil?
...ater point in time, and thereby making your job when you come to debug the error that much harder. It's like silently catching exceptions and continuing without handling them.
– Mark Amery
Jul 5 '13 at 15:20
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What's the proper way to install pip, virtualenv, and distribute for Python?
...o apt-get install virtualenvwrapper)
Note: in Ubuntu 14.04 I receive some errors with pip install, so I use pip3 install virtualenv virtualenvwrapper and add VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 to my .bashrc/.zshrc file.
You then append to your .bashrc file
export WORKON_HOME
source /usr/lo...
Git rebase fails, 'Your local changes to the following files would be overwritten by merge'. No loca
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I had the same errors as above although I'm using Aptana Studio 3. When I exited Aptana, the rebase worked. I had turned off Aptana's git integration a few days ago. Either it didn't really turn off or I should have restarted Aptana.
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How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
I receive following error when I save the object using Hibernate
30 Answers
30
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Read and overwrite a file in Python
...g open as a context manager, which will close the file handler, even if an error occurs!
with open(filename, 'r+') as f:
text = f.read()
text = re.sub('foobar', 'bar', text)
f.seek(0)
f.write(text)
f.truncate()
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