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Group by multiple columns in dplyr, using string vector input
...cumentation here). This lets you use the same functions you would use with select, like so:
data = data.frame(
asihckhdoydkhxiydfgfTgdsx = sample(LETTERS[1:3], 100, replace=TRUE),
a30mvxigxkghc5cdsvxvyv0ja = sample(LETTERS[1:3], 100, replace=TRUE),
value = rnorm(100)
)
# get the column...
Git undo local branch delete
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git reflog show
This will display all the Commit history, you need to select the sha-1 that has the last commit that you want to get back
2: create a branch name with the Sha-1 ID you selected eg: 8c87714
git branch your-branch-name 8c87714
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SQL Server database backup restore on lower version
...te a script for all objects and use the script to generate database.
select "Schema and Data" - if you want to Take both the
things in to the Backup script file select Schema Only -
if only schema is needed.
Yes, now you have done with the Create Script with Schema and Data of the...
How can I create a self-signed cert for localhost?
... Services (IIS) Manager or simply inetmgr.exe. From there go to your site, select Bindings... and Add... or Edit.... Set https and select your certificate from the drop down.
Your certificate is now trusted:
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UIScrollView Scrollable Content Size Ambiguity
...o this view. Don't forget to set the bottom constraint on the lowest view.
Select the UIScrollView, select the size inspector and deselect Content Layout Guides.
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How to determine why visual studio might be skipping projects when building a solution
...tion Explorer, right-click the solution > Add > Existing Project and select your project
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How can I write output from a unit test?
...ling to find it, it's in the Text Explorer, bottom section. When a test is selected, it shows you the result with "Elapsed time: xxx". Below that is the "Output" link.
– kevin
May 18 '14 at 11:00
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What are the “must have” jQuery plugins? [closed]
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My list:
Autocomplete
Input field to enable users quickly finding and selecting some value, leveraging searching and filtering.
JSON
JSON plugin retrieving retrieving and manipulating json data.
Cookie
Simple & lightweight utility plugin for reading, writing and deleting cookies.
Va...
Visual Studio debugging/loading very slow
...Options -> Debugging -> Symbols
Click on the "..." button and create/select a new folder somewhere on your local computer to store cached symbols. I named mine "Symbol caching" and put it in Documents -> Visual Studio 2012.
Click on "Load all symbols" and wait for the symbols to be download...
IF statement: how to leave cell blank if condition is false (“” does not work)
...ls in a column, I would recommend filtering on the column for blanks, then selecting the resulting cells and pressing Del. After which you can remove the filter.
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