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Combine two or more columns in a dataframe into a new column with a new name
... already mentioned in comments by Uwe and UseR, a general solution in the tidyverse format would be to use the command unite:
library(tidyverse)
n = c(2, 3, 5)
s = c("aa", "bb", "cc")
b = c(TRUE, FALSE, TRUE)
df = data.frame(n, s, b) %>%
unite(x, c(n, s), sep = " ", remove = FALSE)
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Visual Studio debugger - Displaying integer values in Hex
...d also in the immediate window. I guess I must have hit a shortcut key accidently or something.
7 Answers
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Convert Newtonsoft.Json.Linq.JArray to a list of specific object type
...
You'll also see this error If you accidentally use the non-generic JsonConvert.DeserializeObject(value) instead of JsonConvert.DeserializeObject<T>(value)
– Chad Hedgcock
Dec 26 '19 at 22:50
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Can I Install Laravel without using Composer?
... Unfortunately, many of my clients are on shared hosting that does not provide it, and I did not think that it would work. Can updates be performed using commands from a PHP script?
– Mike Rockétt
Apr 11 '13 at 5:47
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Video auto play is not working in Safari and Chrome desktop browser
I spent quite a lot of time trying to figure out why video embedded like here:
21 Answers
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Can I avoid the native fullscreen video player with HTML5 on iPhone or android?
... JavaScript code that renders other content synchronized with the running video. It works great in desktop browsers: Firefox, Chrome, and Safari. On an iPhone or a DroidX, the native video player pops up and takes over the screen, thus obscuring the other dynamic content that I want to display simul...
Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...于是又添加了如下的代码：
_gaq.push(
["_addOrganic", "baidu", "word"],
["_addOrganic", "so.360.cn", "q"],
["_addOrganic", "sogou", "query"],
["_addOrganic", "soso", "w"],
["_addOrganic", "gougou", "search"],
["_addOrganic", "youdao", "q"]
);
随着对业务分析的深...
How to alter SQL in “Edit Top 200 Rows” in SSMS 2008
... answered Jan 5 '10 at 8:29
David HallDavid Hall
30.2k1010 gold badges8484 silver badges119119 bronze badges
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DataSet panel (Report Data) in SSRS designer is gone
...pent over 30mins looking for this. Funny how something so essential is so hidden. One would think it would be placed under View or Report menus without having to select the report. If the UI has to be dumbed down let it be dumbed down all the way
– user919426
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Add new value to an existing array in JavaScript [duplicate]
... answered Jan 3 '10 at 23:24
David HellsingDavid Hellsing
93.9k3939 gold badges160160 silver badges199199 bronze badges
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