大约有 3,800 项符合查询结果（耗时：0.0298秒） [XML]
pandas: filter rows of DataFrame with operator chaining
... A B C D
a 1 4 9 1
b 4 5 0 2
c 5 5 1 0
d 1 3 9 6
In [97]: df.mask('A', 1)
Out[97]:
A B C D
a 1 4 9 1
d 1 3 9 6
In [98]: df.mask('A', 1).mask('D', 6)
Out[98]:
A B C D
d 1 3 9 6
...
jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
...
DomenicDomenic
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...
How can one change the timestamp of an old commit in Git?
...mple:
If you wanted to change the dates of commit 119f9ecf58069b265ab22f1f97d2b648faf932e0, you could do so with something like this:
git filter-branch --env-filter \
'if [ $GIT_COMMIT = 119f9ecf58069b265ab22f1f97d2b648faf932e0 ]
then
export GIT_AUTHOR_DATE="Fri Jan 2 21:38:53 20...
Read Excel File in Python
... edited Aug 30 at 22:25
tsuresh97
10188 bronze badges
answered Apr 17 '18 at 9:00
MahabubuzzamanMahabubuzzama...
Build an ASCII chart of the most commonly used words in a given text [closed]
...63 144 131 130 chars
Slow - 3 minutes for the sample text (130)
{32|.123%97<n@if}%]''*n%"oftoitinorisa"2/-"theandi"3/-$(1@{.3$>1{;)}if}/]2/{~~\;}$22<.0=~:2;,76\-:1'_':0*' '\@{"
|"\~1*2/0*'| '@}/
Explanation:
{ #loop through all characters
32|. #convert to uppercase and...
Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...cts/id Delete a contact DELETE /api/contacts/id
准备工作
1. 下载并安装Mongo DB，步骤看这里。
2. Mongo DB C# driver下载可以在nuget搜索mongocsharpdriver。
3. 如果想本地察看数据库中内容，下载MongoVUE。
4. Knockoutjs下载可以在nuget搜索knockoutjs。
...
Java 8 Streams: multiple filters vs. complex condition
...lgerHolger
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4
...
Filter rows which contain a certain string
...71.1 65 4.22 1.835 19.90 1 1 4 1 Toyota Corolla
4 21.5 4 120.1 97 3.70 2.465 20.01 1 0 3 1 Toyota Corona
If you would like to do it the other way round, namely excluding Toyota and Mazda cars, the filter command looks like this:
dplyr::filter(mtcars, !grepl('Toyota|Mazda', ty...
Vagrant error: NFS is reporting that your exports file is invalid
...ports which looks like this:
# VAGRANT-BEGIN: 501 64e10d4d-342e-4f55-b69a-97edda35742f
"/Users/[username]/vagrant" 192.168.11.12 -alldirs -mapall=501:20
# VAGRANT-END: 501 64e10d4d-342e-4f55-b69a-97edda35742f
# VAGRANT-BEGIN: 501 b3c6e7fe-95d4-48db-8876-c89d3e07af8d
"/Users/[username]/Sites/molitec...
Add vertical whitespace using Twitter Bootstrap?
... This adds space below group but not above
– icc97
Jan 8 '16 at 14:13
Of course it does, that's exactly what he a...