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Aggregate / summarize multiple variables per group (e.g. sum, mean)
...-date), sum)
# summarising a specific set of non-grouping variables using select_helpers
# see ?select_helpers for more options
df2 <- df1 %>% group_by(year, month) %>% summarise_at(vars(starts_with('x')), sum)
df2 <- df1 %>% group_by(year, month) %>% summarise_at(vars(matches('.*...
Maven plugins can not be found in IntelliJ
...le artifacts. This can be done in "Settings > Maven > Repositories", select there your "Local" and simply click "Update".
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How do I create ColorStateList programmatically?
... try any of those solutions, pay attention to the order the states like in selector.xml!
– Anton Makov
Oct 4 '19 at 12:34
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Why am I getting 'Assembly '*.dll' must be strong signed in order to be marked as a prerequisite.'?
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When using ClickOnce, this check box is automatically selected each time the application is published with the Publish wizard. See msdn.microsoft.com/en-us/library/1sfbfyk0.aspx for more information.
– David Murdoch
Apr 28 '15 at 16:54
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How do I create a simple 'Hello World' module in Magento?
...ck our work). In the admin application
Go to System->Cache Management
Select Refresh from the All Cache menu
Click Save Cache settings
Now, we make sure that Magento knows about the module
Go to System->Configuration
Click Advanced
In the "Disable modules output" setting box, look for yo...
Excel “External table is not in the expected format.”
...e same problem. which as resolved using these steps:
1.) Click File
2.) Select "save as"
3.) Click on drop down (Save as type)
4.) Select Excel 97-2003 Workbook
5.) Click on Save button
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How do I read text from the (windows) clipboard from python?
...r: from Tkinter import Tk [\nl] r = Tk() [\nl] result = r.selection_get(selection = "CLIPBOARD") [\nl] r.destroy()
– mgkrebbs
Jan 8 '14 at 0:42
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How can I load an object into a variable name that I specify from an R data file?
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I'm extending the answer from @ricardo to allow selection of specific variable if the .Rdata file contains multiple variables (as my credits are low to edit an answer). It adds some lines to read user input after listing the variables contained in the .Rdata file.
loadRDa...
联网 App 第 3 课：点击挑战排行榜，字典存成绩、破纪录才写回、按分数排序...
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var 项 = []
for i = 1 to min(10, length(排名)) {
var 第几 = select(排名, i)
listAdd(项, 列表显示框_榜单.CreateElement(join("第 ", i, " 名 ", select(第几, 1)), join(select(第几, 2), " 次 · ", select(第几, 3)), ""))
}
列表显示框_榜单.Elements = 项
}
...
How do I create a new GitHub repo from a branch in an existing repo?
... that by using this method, I could create the new repo with a hand-picked selection of branches, renamed as I wanted:
$ git push git@github.com:accountname/new_repo +new-project:master +site3a:rails3
The result is that the pre-existing site3a branch is now also moved to the new repo and will appe...