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ruby inheritance vs mixins
...rsion models the entities and properties much more neatly. Truck
descends from Vehicle (which makes sense), whereas SelfPropelling is a characteristic of vehicles (at least, all those we care about in this model of the world)—a characteristic that is passed on to trucks by virtue of Truck being a...
NuGet behind a proxy
...ments that they have been able to omit setting the http_proxy.password key from the command line, or delete it after-the-fact from the config file, and were still able to have NuGet function across the proxy.
If you find, however, that you must specify your password in the NuGet config file, remem...
How do I put my website's logo to be the icon image in browser tabs?
..." href="favicon.ico" />
</head>
If you want to see the favicon from any website, just write www.url.com/favicon.ico and you'll (probably) see it. Stackoverflow's favicon is 16x16 pixels and Wikipedia is 32x32.
*: There's even a browser problem with no filesize limit. You could easily cr...
Why dict.get(key) instead of dict[key]?
...method contains an additional parameter which indicates the missing value. From the documentation
get(key[, default])
Return the value for key if key is in the dictionary, else default. If default is not given, it defaults to None, so that this method never raises a KeyError.
An example ca...
format statement in a string resource file
...riable type), rather than the short versions, for example %s or %d.
Quote from Android Docs: String Formatting and Styling:
<string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string>
In this example, the format string has two arguments: %1$s is a
string ...
What is an unsigned char?
In C/C++, what an unsigned char is used for? How is it different from a regular char ?
17 Answers
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What's the best way to parse command line arguments? [closed]
...y cool module for argument parsing called docopt. Here is an example taken from its documentation:
"""Naval Fate.
Usage:
naval_fate.py ship new <name>...
naval_fate.py ship <name> move <x> <y> [--speed=<kn>]
naval_fate.py ship shoot <x> <y>
naval_...
How can I force clients to refresh JavaScript files?
...hem to do a ctrl F5 refresh to ensure that they get the up-to-date files from the server, but it would be preferable to handle this before that time.
...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...the lock to act on, there is no meaningful data going into it. The exit is from the part inside the ( ). When the subprocess ends, the lock is automatically released, because there is no process holding it.
– clacke
Jun 18 '15 at 10:46
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Why is Cache-Control attribute sent in request header (client to server)?
...
Cache-Control: no-cache is generally used in a request header (sent from web browser to server) to force validation of the resource in the intermediate proxies.
If the client doesn't send this request to the server, intermediate proxies will return a copy of the content if it is fresh (has no...