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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...
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
...
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 check if PHP array is associative or sequential?
... community wiki
2 revs, 2 users 92%Dave Marshall
52
...
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
...
Windows x64编程中寄存器的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...00013F6A15E1 45 8D 44 24 01 lea r8d,[r12+1]
000000013F6A15E6 BA 00 00 00 80 mov edx,80000000h
000000013F6A15EB C7 44 24 28 80 00 00 00 mov dword ptr [rsp+28h],80h
000000013F6A15F3 C7 44 24 20 03 00 00 00 mov dword ptr [rsp+20h],3
000000013F6A15...
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。
0.95 (0.13) (1992.3.8) 开始加入虚拟文件系统思想的内核版本。
0.96 (1992.5.12)开始加入网络支持和虚拟文件系统VFS。
0.97 (1992.8.1)
0.98 (1992.9.29)
0.99 (1992.12.13)
1.0 (1994.3.14)
1.20 (19...
Significant new inventions in computing since 1980
... community wiki
2 revs, 2 users 92%Dylan Beattie
1
...
How do I find out what keystore my JVM is using?
...ti-user Windows NT systems
C:\Windows\Profiles\uName on multi-user Windows 95 systems
C:\Windows on single-user Windows 95 systems
Thus, if the user name is "cathy", "user.home" defaults to
C:\Users\cathy on Windows 7 systems
C:\Winnt\Profiles\cathy on multi-user Windows NT systems
C:\Windows\Pro...
How to split last commit into two in Git
...2" put in the last line):
$ git commit -am "Added last line"
[master 5e284e6] Added last line
1 files changed, 1 insertions(+), 0 deletions(-)
Let's check the log to see what commits we have:
$ git log -p -n2 | cat
Commit 5e284e652f5e05a47ad8883d9f59ed9817be59d8
Author: ...
Date: ...
Added...