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What does the tilde (~) mean in my composer.json file?
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Tilde means nem>x m>t significant release. In your case, it is equivalent to >= 2.0, < 3.0.
The full em>x m>planation is at Tilde Version Range docs page:
The ~ operator is best em>x m>plained by em>x m>ample: ~1.2 is equivalent to >=1.2 <2.0...
check if variable is dataframe
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Use isinstance, nothing else:
if isinstance(m>x m>, pd.DataFrame):
... # do something
PEP8 says em>x m>plicitly that isinstance is the preferred way to check types
No: type(m>x m>) is pd.DataFrame
No: type(m>x m>) == pd.DataFrame
Yes: isinstance(m>x m>, pd.DataFrame)
And don't eve...
Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...ER() OVER (PARTITION BY section_id ORDER BY name) AS r,
t.*
FROM
m>x m>m>x m>m>x m> t) m>x m>
WHERE
m>x m>.r <= 2;
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How do I compile C++ with Clang?
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Also, for posterity -- Clang (like GCC) accepts the -m>x m> switch to set the language of the input files, for em>x m>ample,
$ clang -m>x m> c++ some_random_file.tm>x m>t
This mailing list thread em>x m>plains the difference between clang and clang++ well: Difference between clang and clang++
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What arguments are passed into AsyncTask?
... what I am supposed to put in here and where these arguments end up? What em>x m>actly should I put, and where em>x m>actly will it go? Do I need to include all 3 or can I include 1,2,20?
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How to get current CPU and RAM usage in Python?
...s (current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nim>x m> and Windows platforms.
15 Answers
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
...lized.
Here's a minimal repro:
class Program
{
static bool M(out int m>x m>)
{
m>x m> = 123;
return true;
}
static int N(dynamic d)
{
int y;
if(d || M(out y))
y = 10;
return y;
}
}
I see no reason why that should be illegal; ...
Convert a timedelta to days, hours and minutes
...answered Jan 22 '10 at 18:26
Alem>x m> MartelliAlem>x m> Martelli
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Ruby: em>x m>tend self
In Ruby, I understand the basic idea of em>x m>tend . However, what's happening in this segment of code? Specifically, what does em>x m>tend do? Is it just a convenient way of making the instance methods into class methods? Why would you do it this way rather than specifying class methods from the beginnin...
UIPanGestureRecognizer - Only vertical or horizontal
...GestureRecognizer that will drag the view horizontally, just updating the m>x m>-coordinate.
22 Answers
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