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Assign output of a program to a variable using a MS batch file
...a batch file rather than on the command line. Imagine, your test.bat has something like:
for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %datetime%
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How to save a plot as image on the disk?
...p(), pdf() or similar
Plot your model
Close the device using dev.off()
Some example code for saving the plot to a png file:
fit <- lm(some ~ model)
png(filename="your/file/location/name.png")
plot(fit)
dev.off()
This is described in the (combined) help page for the graphical formats ?png, ?...
Checkout old commit and make it a new commit [duplicate]
On Git, say I mess up my commits, and I want to make the version 3 commits ago as the new version. If I do git checkout xxxx , it creates a new branch and it seems like I can only merge it? Could I make this the new "master version"?
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In Clojure how can I convert a String to a number?
I have various strings, some like "45", some like "45px". How how I convert both of these to the number 45?
12 Answers
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Pass a JavaScript function as parameter
How do I pass a function as a parameter without the function executing in the "parent" function or using eval() ? (Since I've read that it's insecure.)
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Redirect non-www to www in .htaccess
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This solution doesn't work when some pages (like login or sign up) use https protocol.
– Alexey Kosov
Nov 27 '14 at 7:47
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Do we need semicolon at the end? [duplicate]
I missed semicolons in some of the places in my JavaScript, but its not throwing error in any of the browsers. Is the ; at the end needed?
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Google Authenticator available as a public service?
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The project is open source. I have not used it. But it's using a documented algorithm (noted in the RFC listed on the open source project page), and the authenticator implementations support multiple accounts.
The actual process is straightforward. The one time code is, essentially, a pseudo ...
How to dynamically insert a tag via jQuery after page load?
...tags as strings and then using jquery replaceWith() to add them to the document after page load:
9 Answers
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Difference between HashMap, LinkedHashMap and TreeMap
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All three classes implement the Map interface and offer mostly the same functionality. The most important difference is the order in which iteration through the entries will happen:
HashMap makes absolutely no guarantees about the iteration order...