大约有 44,800 项符合查询结果（耗时：0.0505秒） [XML]
Delete the first three rows of a dataframe in pandas
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281
Use iloc:
df = df.iloc[3:]
will give you a new df without the first three rows.
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Accessing bash command line args $@ vs $*
...rs are quoted. Let me illustrate the differences:
$ set -- "arg 1" "arg 2" "arg 3"
$ for word in $*; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in $@; do echo "$word"; done
arg
1
arg
2
arg
3
$ for word in "$*"; do echo "$word"; done
arg 1 arg 2 arg 3
$ for word in "$@"; do echo "$...
How to get multiple select box values using jQuery?
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Michael B.
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answered Jul 14 '10 at 5:09
Pranay RanaPranay ...
How to detect shake event with android?
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edited Jun 10 '15 at 8:27
answered Mar 11 '11 at 10:08
N...
How do I speed up the gwt compiler?
...agent" values="ie6,gecko,gecko1_8"></define-property>
or in gwt 2.x syntax, and for one browser only:
<set-property name="user.agent" value="gecko1_8"/>
This, for example, will compile your application for IE and FF only. If you know you are using only a specific browser for test...
Only read selected columns
..."NULL", 6)),
+ header = TRUE)
Year Jan Feb Mar Apr May Jun
1 2009 -41 -27 -25 -31 -31 -39
2 2010 -41 -27 -25 -31 -31 -39
3 2011 -21 -27 -2 -6 -10 -32
Change "integer" to one of the accepted types as detailed in ?read.table depending on the real type of data.
data.txt looks like th...
CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true
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257
This is a part of security, you cannot do that. If you want to allow credentials then your Acc...
Code for decoding/encoding a modified base64 URL
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edited Aug 4 '09 at 21:36
answered Aug 4 '09 at 17:06
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Complex nesting of partials and templates
...ry nav -->
<a href="#/page/1">Page 1</a>
<a href="#/page/2">Page 2</a>
<a href="#/page/3">Page 3</a>
<!-- display the view -->
<div ng-view>
</div>
Directive for the sub navigation
app.directive('mySubNav', function(){
return {
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What is considered a good response time for a dynamic, personalized web application? [closed]
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answered Oct 2 '08 at 20:01
Hank GayHank Gay
64.2k2929 gold badges144144 silver badges216216 bronze badges
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