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Replace a string in a file with nodejs
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Sure, but do I have to read the file replace the text and then write the file again, or is there an easier way, sorry I'm more of a frontend guy.
– Andreas Köberle
Jan 6 '13 at 12:50
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Dynamically select data frame columns using $ and a character value
...(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Seccond argument in do.call is a list of arguments
# to pass to the first argument, in this case 'order'.
# Since a data.frame is really a li...
How to search for file names in Visual Studio?
... best answer out of all of them.
To summarize, simply hit:
CTRL + ,
And then start typing the file name.
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How can I check if multiplying two numbers in Java will cause an overflow?
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If a and b are both positive then you can use:
if (a != 0 && b > Long.MAX_VALUE / a) {
// Overflow
}
If you need to deal with both positive and negative numbers then it's more complicated:
long maximum = Long.signum(a) == Long.signum(b...
What does `kill -0 $pid` in a shell script do?
...mation see the following manpages:
kill(1)
$ man 1 kill
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If sig is 0, then no signal is sent, but error checking is still performed.
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kill(2)
$ man 2 kill
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If sig is 0, then no signal is sent, but error checking is still performed; this
can be used to check for the existence of a proc...
What is mutex and semaphore in Java ? What is the main difference?
...epts client connections. This thread can handle 10 clients simultaneously. Then each new client sets the semaphore until it reaches 10. When the Semaphore has 10 flags, then your thread won't accept new connections
Mutex are usually used for guarding stuff. Suppose your 10 clients can access multip...
Paste in insert mode?
... paste is very close in your command history, so you can simply press ':', then arrow-up and add a '!'.
– Rafael Barbosa
Nov 30 '12 at 13:51
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Identify duplicates in a List
... that you want to use this optimal solution (instead of sorting the input) then you'll also want to pre-allocate the size of the HashSet() objects. Without the preallocation, you don't get O(1) insert time when inserting into the HashSet(). This is because the internal hash array gets repeatedly res...
How to create a MySQL hierarchical recursive query
... database engine provides this syntax or you can migrate to one that does, then that is certainly the best option to go for. If not, then also consider the following alternatives.
Alternative 2: Path-style Identifiers
Things become a lot easier if you would assign id values that contain the hierar...
Push origin master error on new repository
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I was having the same issue and then smacked myself in the head because I hadn't actually added my project files.
git add -A
git commit -am "message"
git push origin master
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