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event Action vs event EventHandler
...om the power of sameness) is that you can extend the EventArgs object with new properties without altering the signature of the event. This would still be possible if you used Action<SomeClassWithProperties>, but I don't really see the point with not using the regular approach in that case.
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How to avoid .pyc files?
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From "What’s New in Python 2.6 - Interpreter Changes":
Python can now be prevented from
writing .pyc or .pyo files by
supplying the -B switch to the Python
interpreter, or by setting the
PYTHONDONTWRITEBYTECODE environment
v...
What does “while True” mean in Python?
...eve you can do while(true == true) in most languages. This may help for a new programmer to better understand the logic behind it.
– Chris
Sep 20 '10 at 19:14
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Extract subset of key-value pairs from Python dictionary object?
...('l', 'm', 'n')}
If you're using Python 3, and you only want keys in the new dict that actually exist in the original one, you can use the fact to view objects implement some set operations:
{k: bigdict[k] for k in bigdict.keys() & {'l', 'm', 'n'}}
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How to avoid “if” chains?
...y leak in C++ actually (ignoring the minor syntax error). One doesn't use "new" in this kind of case, just say "MyContext myContext;".
– Sumudu Fernando
Accessing the web page's HTTP Headers in JavaScript
...t code to get all the HTTP headers by performing a get request:
var req = new XMLHttpRequest();
req.open('GET', document.location, false);
req.send(null);
var headers = req.getAllResponseHeaders().toLowerCase();
alert(headers);
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Using grep to search for a string that has a dot in it
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geekosaurgeekosaur
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How to create a release signed apk file using Gradle?
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@Prem, file() always assumes relative paths. Use new File(path) if you want it to be treated as absolute.
– ars-longa-vita-brevis
Jul 14 '14 at 9:55
4
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Copy tables from one database to another in SQL Server
...recreate any indexes and such. If the tables do exist, it will append the new data by default but you can adjust that (edit mappings) so it will delete all existing data.
I use this all the time and it works fairly well.
s...
Typedef function pointer?
... @user814628: It is not clear quite what you're asking. With typedef int newname, you are making newname into an alias for int. With typedef int (*func)(int), you are making func into an alias for int (*)(int) — a pointer to function taking an int argument and returning an int value.
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