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In Python how should I test if a variable is None, True or False
...il"
# execution continues from here, regardless of exception or not
And now you can have a much richer type of notification from the simulate method as to what exactly went wrong, in case you find error/no-error not to be informative enough.
...
Should I use `this` or `$scope`?
...it not a good idea.
I'd use $scope, for clarity's sake.
UPDATE
There is now the 'controller as' syntax, discussed here. I am not a fan, but now that it's a more 'official' AngularJS construct it deserves some attention.
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NSUserDefaults - How to tell if a key exists
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I know this is old, but having only just now needed this information, I need to point out that the 'containsObject:' reference means just that: the object. NOT the key. IOW, in your header file if you've defined: #define kMyKey ...
Tools for JPEG optimization? [closed]
Do you know of any tools (preferrably command-line) to automatically and losslessly optimize JPEGs that I could integrate into our build environment? For PNGs I'm currently using PNGOUT , and it generally saves around 40% bandwidth/image size.
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Pretty printing XML in Python
...This is no longer necessary in Python 2.7: xml.dom.minidom's toprettyxml() now produces output like '<id>1</id>' by default, for nodes that have exactly one text child node.
– Marius Gedminas
Jul 12 '13 at 14:00
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IOCTL Linux device driver [closed]
...IN_MAGIC 'P'
#define NUM 0
#define PAUSE_PRIN __IO(PRIN_MAGIC, NUM)
and now use ioctl as
ret_val = ioctl(fd, PAUSE_PRIN);
The corresponding system call in the driver module will receive the code and pause the printer.
__IOW(MAGIC, SEQ_NO, TYPE) MAGIC and SEQ_NO are the same as above, and TYP...
How do I get class name in PHP?
...function getClass()
{
return get_class();
}
}
Now you can do:
$className = MyClass::getClass();
This is somewhat limited, however, because if my class is extended it will still return 'MyClass'. We can use get_called_class instead, which relies on Late Static Binding...
Setting Environment Variables for Node to retrieve
...ID and USER_KEY from either process.env or some specificed file on disk.
Now, the magic happens when you run the application.
USER_ID=239482 USER_KEY=foobar node app.js
That will pass the user id 239482 and the user key as foobar. This is suitable for testing, however for production, you will pr...
How can I use external JARs in an Android project?
... libs in your project's root folder
Copy your JAR files to the libs folder
Now right click on the Jar file and then select Build Path > Add to Build
Path, which will create a folder called 'Referenced Libraries' within your
project
By doing this, you will not
lose your libraries that are being r...
How can I output leading zeros in Ruby?
...
If the maximum number of digits in the counter is known (e.g., n = 3 for counters 1..876), you can do
str = "file_" + i.to_s.rjust(n, "0")
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