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How can I put a database under git (version control)?
I'm doing a web app, and I need to make a branch for some major changes, the thing is, these changes require changes to the database schema, so I'd like to put the entire database under git as well.
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Get HTML code from website in C#
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The Idea of using regex for html or XML is VERY bad coding practice... Going in Your Way - we should use goto keyword everywhere...
– Lightning3
Jan 10 '15 at 0:24
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How do I find which program is using port 80 in Windows? [duplicate]
... can just run it as usual), run netstat -anb, and then look through output for your program.
BTW, Skype by default tries to use ports 80 and 443 for incoming connections.
You can also run netstat -anb >%USERPROFILE%\ports.txt followed by start %USERPROFILE%\ports.txt to open the port and proces...
What is the benefit of zerofill in MySQL?
I just want to know what is the benefit/usage of defining ZEROFILL for INT DataType in MySQL ?
9 Answers
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MySql: Tinyint (2) vs tinyint(1) - what is the difference?
...s.
But, display width is most important if you are using ZEROFILL option, for example your table has following 2 columns:
A tinyint(2) zerofill
B tinyint(4) zerofill
both columns has the value of 1, output for column A would be 01 and 0001 for B, as seen in screenshot below :)
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CSS scrollbar style cross browser [duplicate]
...ty invented by Microsoft developers. They are not part of the W3C standard for CSS and therefore most browsers just ignore them.
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SVN+SSH, not having to do ssh-add every time? (Mac OS)
...e into ~/.ssh. This is not strictly necessary but it's the standard place for such things.
Then run ssh-add -K ~/.ssh/privateKey.txt. It'll prompt for your passphrase if necessary, then add it to your Keychain.
After that, you shouldn't have to do anything else. A slightly longer explanation is...
How do I detect if software keyboard is visible on Android Device or not?
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There is no direct way - see http://groups.google.com/group/android-platform/browse_thread/thread/1728f26f2334c060/5e4910f0d9eb898a where Dianne Hackborn from the Android team has replied. However, you can detect it indirectly by checking if the window size changed in #onMeasure. See How to check...
Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...le, and it executes its database query the first time you iterate over it. For example, this will print the headline of all entries in the database:
for e in Entry.objects.all():
print e.headline
So your ten million rows are retrieved, all at once, when you first enter that loop and get t...
Remove duplicated rows using dplyr
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Note: dplyr now contains the distinct function for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then on...