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How do I detect unsigned integer multiply overflow?
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I see you're using unsigned integers. By definition, in C (I don't know about C++), unsigned arithmetic does not overflow ... so, at least for C, your point is moot :)
With signed integers, once there has been overflow, undefined behaviour (UB) has occurred and your program can do anything (...
What is the difference between map and flatMap and a good use case for each?
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res0: Array[String] = Array("Roses are red", "Violets are blue")
Now, map transforms an RDD of length N into another RDD of length N.
For example, it maps from two lines into two line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking...
Why is using 'eval' a bad practice?
...ad design than division by zero or attempting to import a module which is known not to exist. eval isn't insecure. Applications are insecure.
– S.Lott
Dec 2 '09 at 17:38
17
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SBT stop run without exiting
...lly, start sbt, optionally switch to the subproject you want to run, run.
Now, when you want to stop the process, close its stdin by typing CTRL-D in the sbt shell.
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bower command not found
...c('git')
Error: not found: git
I change the permissions (chomd 755 git).
Now node-which can find it.
> which.sync('git')
'/usr/local/bin/git'
Hope this helps.
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Server.UrlEncode vs. HttpUtility.UrlEncode
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" " ==> "%20"
"100% true" ==> "100%%20true" (ok, your url is broken now)
"test A.aspx#anchor B" ==> "test%20A.aspx#anchor%20B"
"test A.aspx?hmm#anchor B" ==> "test%20A.aspx?hmm#anchor B" (note the difference with the previous escape sequence!)
It also has the lovelily specific MSDN d...
Android emulator and virtualbox cannot run at same time
...irtualbox and Android emulators can work at the same time.
BTW, I do not know why the modules are loaded.
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Should I be concerned about excess, non-running, Docker containers?
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The docs for the RUN command have now moved to: docs.docker.io/en/latest/reference/builder/#run
– aculich
Feb 20 '14 at 3:24
add a com...
Git: updating remote branch information
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I think it's also useful to know that, although a little bit more verbose, you can use git push <remote> --delete <branchname> to delete remote branches, too.
– AeroCross
Mar 22 '12 at 19:27
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What does java:comp/env/ do?
...ode I found out that the simple property useNaming="false" did the trick!! Now Tomcat resolves names java:/liferay instead of java:comp/env/liferay
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