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How to make --no-ri --no-rdoc the default for gem install?
...e strip out the embedded Ruby that I copied & pasted at some point and then resulted in psych errors while installing RubyGems 1.8.10 under Ruby 1.9.2.
– stevenhaddox
Sep 3 '11 at 15:02
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Modifying a subset of rows in a pandas dataframe
...= 0
0 True
1 False
2 True
Name: A, dtype: bool
>>>
Then, we use the above array of booleans to select and modify the necessary rows:
>>> df.loc[df.A == 0, 'B'] = np.nan
>>> df
A B
0 0 NaN
1 1 0
2 0 NaN
For more information check the advanced in...
How can I convert a Unix timestamp to DateTime and vice versa?
There is this example code, but then it starts talking about millisecond / nanosecond problems.
19 Answers
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Is there any WinSCP equivalent for linux? [closed]
...sfer Protocol as protocol and optionally set the Logon Type to Normal if authentication is needed, resp. enter your data.
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Check if $_POST exists
...
Why? If server method isn't POST, then the POST variable won't be set, so the second half is all that is needed. Am I wrong?
– ToolmakerSteve
Nov 4 '15 at 17:04
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JavaScript - get the first day of the week from current date
...ow the number of day of the week (being 0=Sunday, 1=Monday, etc).
You can then subtract that number of days plus one, for example:
function getMonday(d) {
d = new Date(d);
var day = d.getDay(),
diff = d.getDate() - day + (day == 0 ? -6:1); // adjust when day is sunday
return new Date(d...
Exit codes in Python
...ux, the standard is: exit 0 in the case everything was ok. Type a command, then echo $?: if you read 0, it returned without an error. The idea is to have standard tests. If the code xyz.py did not encounter any error, it SHOULD return 0!
– Bruno von Paris
Oct 1...
Is there a W3C valid way to disable autocomplete in a HTML form?
...o give an input field a name like "email_<?= randomNumber() ?>", and then have the script that receives this data loop through the POST or GET variables looking for something matching the pattern "email_[some number]", you could pull this off, and this would have (practically) guaranteed succe...
How to escape os.system() calls?
...why he closes his single quotes, adds an escaped literal single quote, and then reopens his single quotes again.
– lhunath
May 11 '09 at 13:13
4
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Print array to a file
... print_r($b, true); // $results now contains output from print_r
You can then save $results with file_put_contents. Or return it directly when writing to file:
file_put_contents('filename.txt', print_r($b, true));
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