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How do you run a command for each line of a file?
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Read a file line by line and execute commands: 4 answers
This is because there is not only 1 answer...
shell command line expansion
xargs dedicated tool
while read with some remarks
while read -u using dedicated fd, for interactive processing (sam...
Command to get time in milliseconds
Is there a shell command in Linux to get the time in milliseconds?
12 Answers
12
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Convert a series of parent-child relationships into a hierarchical tree?
...sic recursive function to parse the child/parent pairs to a tree structure and another recursive function to print it out. Only one function would suffice but here's two for clarity (a combined function can be found at the end of this answer).
First initialize the array of child/parent pairs:
$tre...
How to increment a pointer address and pointer's value?
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First, the ++ operator takes precedence over the * operator, and the () operators take precedence over everything else.
Second, the ++number operator is the same as the number++ operator if you're not assigning them to anything. The difference is number++ returns number and then incre...
Plot a legend outside of the plotting area in base graphics?
.... Normally this would get clipped to the plot region, but do par(xpd=TRUE) and with a bit of adjustment you can get a legend as far right as it can go:
set.seed(1) # just to get the same random numbers
par(xpd=FALSE) # this is usually the default
plot(1:3, rnorm(3), pch = 1, lty = 1, type = "o"...
Try-finally block prevents StackOverflowError
...n from the invocation of foo() inside the try, you call foo() from finally and start recursing again. When that causes another exception, you'll call foo() from another inner finally(), and so on almost ad infinitum.
share
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How to optimize for-comprehensions and loops in Scala?
...imizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catch is expensive. But since such nested returns are rare in Scala programs, the optimizer did not yet address this case. There is work going on to improve the optimizer which hopefully will solve this issue soon.
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Using bitwise OR 0 to floor a number
...in some cases?
Clarity is an obvious one, since we had to figure it out, and well,
I'm writting this question.
Will not pass jsLint.
32-bit signed integers only
Odd Comparative behavior: Math.floor(NaN) === NaN, while (NaN | 0) === 0
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Break promise chain and call a function based on the step in the chain where it is broken (rejected)
...et's say you have something like the following:
stepOne()
.then(stepTwo, handleErrorOne)
.then(stepThree, handleErrorTwo)
.then(null, handleErrorThree);
To better understand what's happening, let's pretend this is synchronous code with try/catch blocks:
try {
try {
try {
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How can I launch multiple instances of MonoDevelop on the Mac?
...open a new MonoDevelop instance to work on a different project on the Mac, and the OS is currently preventing me from opening a new instance.
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