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Argparse optional positional arguments?
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Use nargs='?' (or nargs='*' if you will need more than one dir)
parser.add_argument('dir', nargs='?', default=os.getcwd())
extended example:
>>> import os, argparse
>>> parser = argparse.ArgumentParser()
>>> ...
Where to place JavaScript in an HTML file?
Say I have a fairly hefty JavaScript file, packed down to roughly 100kb or so. By file I mean it’s an external file that would be linked in via <script src="..."> , not pasted into the HTML itself.
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Create empty file using python [duplicate]
... I've been using os.system(y) where y = 'touch %s' % (x) . I've looked for a non-directory version of os.mkdir , but I haven't been able to find anything. Is there a tool like this to create a file without opening it, or using system or popen/subprocess?
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What is the difference between JSF, Servlet and JSP?
... text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-known taglib is JSTL. JSP also supports Expression Language, which can be used to access backend data (via...
BaseException.message deprecated in Python 2.6
...from Exception and pass the message as the first parameter to the constructor
Example:
class MyException(Exception):
"""My documentation"""
try:
raise MyException('my detailed description')
except MyException as my:
print my # outputs 'my detailed description'
You can use str(my) or (l...
What is the meaning of polyfills in HTML5?
What is the meaning of polyfills in HTML5? I saw this word in many sites about HTML5, e.g. HTML5-Cross-Browser-Polyfills.
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Difference between FOR and AFTER triggers?
What's the difference between FOR and AFTER triggers?
3 Answers
3
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What's the “big idea” behind compojure routes?
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Compojure explained (to some degree)
NB. I am working with Compojure 0.4.1 (here's the 0.4.1 release commit on GitHub).
Why?
At the very top of compojure/core.clj, there's this helpful summary of Compojure's purpose:
A concise syntax for generating Ring handlers.
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“Single-page” JS websites and SEO
There are a lot of cool tools for making powerful "single-page" JavaScript websites nowadays. In my opinion, this is done right by letting the server act as an API (and nothing more) and letting the client handle all of the HTML generation stuff. The problem with this "pattern" is the lack of search...
Canvas is stretched when using CSS but normal with “width” / “height” properties
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It seems that the width and height attributes determine the width or height of the canvas's coordinate system, whereas the CSS properties just determine the size of the box in which it will be shown.
This is explained at http://www.whatwg.org/html#attr-canvas-width (needs JS) or http://www...