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How to set default values in Rails?
... also need to specify the column type: change_column :people, :last_name, :string, default: "Doe"
– GoBusto
Apr 24 '15 at 10:37
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How to detect orientation change?
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Im new to coding but shouldn't selector have a string format of "rotated:"??
– Chameleon
Apr 24 '15 at 23:44
4
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How to remove all rows in a numpy.ndarray that contain non-numeric values
...es are missing (either by just not being there, being NaN , or by being a string written " NA ").
1 Answer
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Rails Model, View, Controller, and Helper: what goes where?
...he model (it treats the model as it's data in the same way you might treat strings and arrays as data in objects outside of Rails). Here's a good video with an example of this technique.
– Joshua Cheek
Dec 15 '11 at 11:13
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How does a debugger work?
...t can acertain what might be in the memory, with contents of ints, floats, strings, etc.). Like the first poster said, this information and how these symbols work greatly depends on the environment and the language.
share
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Open an IO stream from a local file or url
I know there are libs in other languages that can take a string that contains either a path to a local file or a url and open it as a readable IO stream.
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Shrink a YouTube video to responsive width
..." height="9")
Waits until document is ready before resizing
Uses jQuery substring *= selector instead of start of string ^=
Gets reference width from video iframe parent instead of predefined element
Javascript solution
No CSS
No wrapper needed
Thanks to @Dampas for starting point.
https://stackov...
Using Python's os.path, how do I go up one directory?
... Using abspath will just clean it up a bit. If it's not there, the actual string for the path name will be /Users/hobbes3/Sites/mysite/mysite/../templates, which is perfectly fine, but just a little more cluttered. It also ensures that Django's reminder to use absolute paths is obeyed. If you're in...
Is there a destructor for Java?
... System.out.println("closing...");
}
public static void main(String[] args) {
try (Closeable c = new Closeable()) {
System.out.println("trying...");
throw new Exception("throwing...");
}
catch (Exception e) {
System.out.prin...
How to make a class JSON serializable
...e Python primitives that have a direct JSON equivalent (e.g. dicts, lists, strings, ints, etc.). jsonpickle builds on top of these libraries and allows more complex data structures to be serialized to JSON. jsonpickle is highly configurable and extendable–allowing the user to choose the JSON backe...