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Argparse optional positional arguments?
I have a script which is meant to be used like this:
usage: installer.py dir [-h] [-v]
3 Answers
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how do you filter pandas dataframes by multiple columns
...['Year']==2014)]
Results for 100,000 rows:
6.67 ms ± 557 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
5.54 ms ± 536 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
Results for 10,000,000 rows:
326 ms ± 6.52 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
472 ...
Input and Output binary streams using JERSEY?
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This consumes all bytes into memory, which means large files could bring down the server. The purpose of streaming is to avoid consuming all bytes into memory.
– Robert Christian
Jan 15 '16 at 0:34
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Is it possible to have multiple styles inside a TextView?
...entMethod(LinkMovementMethod.getInstance());
Further Study
Explain the meaning of Span flags like SPAN_EXCLUSIVE_EXCLUSIVE
Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
Types of spans
This example was originally inspired from here.
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How to create JSON string in C#
...roject can open in VS 2008...so it was converted at some point. Does that mean we can now use .NET 3.5 within our existing codebase?
– PositiveGuy
Jun 29 '09 at 1:42
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In Vim, how do you search for a word boundary character, like the \b in regexp?
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/the\>
See :help /ordinary-atom
I assume "regexp" means PCRE. It is worth noting that Vim's regex syntax differs from (and apparently predates) PCRE.
See also:
Why does VIM have its own regex syntax?
What's the difference between vim regex and normal regex?
Within vim's r...
How to use Swift @autoclosure
...> 1}) fails with error: function produces expected type 'Bool'; did you mean to call it with '()'?. I tested it in a playground and with the Swift REPL.
– Ole Begemann
Jun 15 '14 at 9:53
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What does the caret operator (^) in Python do?
...havior in a class of your own. For example, in some languages the ^ symbol means exponentiation. You could do that this way, just as one example:
class Foo(float):
def __xor__(self, other):
return self ** other
Then something like this will work, and now, for instances of Foo only, th...
What is a stored procedure?
...ert, Update, Delete and at least one select based on the primary key, that means each table will have 4 procedures. Now take a decent size database of 400 tables, and you have 1600 procedures! And that's assuming you don't have duplicates which you probably will.
This is where using an ORM or some ...
Get event listeners attached to node using addEventListener
...n event listener in that list with the same type, listener, and capture.
Meaning that an event listener is added to the "list of event listeners". That's all. There is no notion of what this list should be nor how you should access it.
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