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Summarizing multiple columns with dplyr? [duplicate]
...8 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
If you want to summarize only certain columns, use summarise_at or summarise_if functions.
Alternatively, the purrrlyr package provides the same functionality:
library(purrrlyr)
df %>% slice_rows("grp") %&g...
How to find the statistical mode?
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I measured running time with a factor of 1e6 elements and this solution was faster than the accepted answer by almost factor 3!
– vonjd
Jun 6 '16 at 10:34
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How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]
...09v3 Subject Key Identifier:
34:66:39:7C:EC:8B:70:80:9E:6F:95:89:DB:B5:B9:B8:D8:F8:AF:A4
X509v3 Authority Key Identifier:
keyid:34:66:39:7C:EC:8B:70:80:9E:6F:95:89:DB:B5:B9:B8:D8:F8:AF:A4
X509v3 Basic Constraints: critical
CA:F...
How to fix “Referenced assembly does not have a strong name” error?
...00094000000060200000024000052534131000400000100010093d86f6656eed3
b62780466e6ba30fd15d69a3918e4bbd75d3e9ca8baa5641955c86251ce1e5a83857c7f49288eb
4a0093b20aa9c7faae5184770108d9515905ddd82222514921fa81fff2ea565ae0e98cf66d3758
cb8b22c8efd729821518a76427b7ca1c979caa2d78404da3d44592badc194d05bfdd29b9b812...
When & why to use delegates? [duplicate]
... community wiki
3 revs, 3 users 92%Benoit Vidis
3
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JavaScript unit test tools for TDD
... community wiki
2 revs, 2 users 92%Tauren
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Can I use a min-height for table, tr or td?
...row. Works on old browsers too.
.rowNumberColumn {
background-color: #e6e6e6;
min-height: 22;
}
<table width="100%" cellspacing="0" class="htmlgrid-table">
<tr id="tr_0">
<td width="3%" align="center" class="readOnlyCell rowNumberColumn">1</td>
...
Writing a pandas DataFrame to CSV file
... edited Apr 7 '19 at 22:10
cs95
231k6060 gold badges390390 silver badges455455 bronze badges
answered Jul 17 '17 at 10:27
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Passing variables through handlebars partial
...rios: https://github.com/wycats/handlebars.js/blob/ce74c36118ffed1779889d97e6a2a1028ae61510/spec/qunit_spec.js#L456-L462
https://github.com/wycats/handlebars.js/blob/e290ec24f131f89ddf2c6aeb707a4884d41c3c6d/spec/partials.js#L26-L32
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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...12 (1992.1.15)主要加入对数学协处理器的软件模拟程序。
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