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Can I invoke an instance method on a Ruby module without including it?
...f you want to call these methods without including module in another class then you need to define them as module methods:
module UsefulThings
def self.get_file; ...
def self.delete_file; ...
def self.format_text(x); ...
end
and then you can call them with
UsefulThings.format_text("xxx")
...
How to fix bower ECMDERR
...
Following commands work for me
npm cache clean
bower cache clean
and then
bower install
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What's the difference between a continuation and a callback?
...owever if a function calls back another function as the last thing it does then the second function is called a continuation of the first. For example:
var array = [1, 2, 3];
forEach(array, function (element, array, index) {
array[index] = 2 * element;
});
console.log(array);
fun...
How do I decode a string with escaped unicode?
...nswer.
This is a unicode, escaped string. First the string was escaped, then encoded with unicode. To convert back to normal:
var x = "http\\u00253A\\u00252F\\u00252Fexample.com";
var r = /\\u([\d\w]{4})/gi;
x = x.replace(r, function (match, grp) {
return String.fromCharCode(parseInt(grp, 1...
Auto Generate Database Diagram MySQL [closed]
...ect. Is there a tool out there that will let me select specific tables and then create a database diagram for me based on a MySQL database? Preferably it would allow me to edit the diagram afterward since none of the foreign keys are set...
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How can I search Git branches for a file or directory?
...to somefile: if you need regex search over the path/filename, for example, then you can use ididak's answer.
– ShreevatsaR
Feb 27 '12 at 9:05
72
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Namespace and class with the same name?
...it, despite being told quite clearly what's going on. E.g., using Foo.Bar; then later Bar b is quite clearly referring to Bar, a class (or enum) inside the namespace Foo.Bar. The real reason not to do that is purely that the C# compiler fails to correctly understand it, which is awfully surprising a...
Do copyright dates need to be updated? [closed]
Every now and then I see a web site that has an old copyright date. In my mind, I always think "Look at the sucker who forgot to update his copyright year!" Then, while I was hard-coding a copyright year into the site I'm currently designing, it suddenly struck me:
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What is getattr() exactly and how do I use it?
...'s name stored in a variable called attr_name.
if
attr_name = 'gender'
then, instead of writing
gender = person.gender
you can write
gender = getattr(person, attr_name)
Some practice:
Python 3.4.0 (default, Apr 11 2014, 13:05:11)
>>> class Person():
... name = 'Victor'
... ...
How to split a column into two columns?
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@Crashthatch -- then again you can just add index = df.index and you are good.
– root
Mar 27 '13 at 15:07
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