大约有 45,000 项符合查询结果（耗时：0.0772秒） [XML]
Selecting with complex criteria from pandas.DataFrame
...)
A B C
1 7 80 700
2 4 90 100
4 7 80 200
5 7 60 800
Now if you want to change the returned values in column A you can save their index:
my_query_index = df.query('B > 50 & C != 900').index
....and use .iloc to change them i.e:
df.iloc[my_query_index, 0] = 5000
prin...
Undo git stash pop that results in merge conflict
...eckout new-branch; git rebase master
To apply the correct stashed changes (now 2nd on the stack): git stash apply stash@{1}
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What is the “-d” in “npm -d install”?
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OK. now we know that "-D" and "-d" are different options. But what does "-d" do? I ever seen "-dd" and still don't know what it is used for
– titou10
Jan 8 at 14:49
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Change default timeout for mocha
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Thanks a lot . Now the change affected
– lm.
May 6 '14 at 20:29
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How to swap keys and values in a hash
... out[value] << key
end
end
end
Note: This code with tests is now on GitHub.
Or:
class Hash
def safe_invert
self.each_with_object({}){|(k,v),o|(o[v]||=[])<<k}
end
end
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Debug.Assert vs Exception Throwing
...get). Yes, assertions should usually be impossible to fire, but you don't know what's possible when things go out in the wild. What you thought of as impossible might happen in production, and a responsible program should detect violated assumptions and act promptly.
– kizzx2
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How to get anchor text/href on click using jQuery?
...;
});
});
.
Update Based On Question Edit
You can get them like this now:
For href:
$(function(){
$('div.res a').click(function(){
alert($(this).attr('href'));
// or alert($(this).hash();
});
});
For Text:
$(function(){
$('div.res a').click(function(){
alert($(this).text...
how to pass an integer as ConverterParameter?
...rameter has no specific type (it's just an object) so the parser does not know what conversion to apply, hence every literal is just treated as a string.
– H.B.
Aug 8 '16 at 13:39
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Simple logical operators in Bash
...ssions with more quirks (but older and more portable). Don't write any for now; start worrying about them when you find scripts that contain them.
This is the idiomatic way to write your test in bash:
if [[ $varA == 1 && ($varB == "t1" || $varC == "t2") ]]; then
If you need portability ...
How do you enable the escape key close functionality in a Twitter Bootstrap modal?
... I can confirm that this solution works in Bootstrap 4. I don't know why it doesn't work by default as the docs say.
– Binar Web
Apr 20 '19 at 13:44
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