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Reading a file line by line in Go
...('\n') isn't fully equivalent to ReadLine because ReadString is unable to handle the case when the last line of a file does not end with the newline character.
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How do I prompt a user for confirmation in bash script? [duplicate]
... do dangerous stuff
fi
I incorporated levislevis85's suggestion (thanks!) and added the -n option to read to accept one character without the need to press Enter. You can use one or both of these.
Also, the negated form might look like this:
read -p "Are you sure? " -n 1 -r
echo # (optional) mov...
arrayfun can be significantly slower than an explicit loop in matlab. Why?
...r work inside, you would not notice. But since this computation is memory bandwidth bounded, you do see the loop overhead. And you will even more clearly see the overhead of calling Func1 there.
So what's up with arrayfun? No function inlinig there either, so a lot of overhead. But why so much wor...
Hash Map in Python
... The second example just builds a dict in the same ways as before and then copies it. The other use dict, which would be more appopriate in this context, is dict(key1=value1, key2=value2, ...) but that requires the keys to strings which are also valid Python identifiers (and internally, thi...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
...
Here's a summary of Dimitris Andreou's link.
Remember sum of i-th powers, where i=1,2,..,k. This reduces the problem to solving the system of equations
a1 + a2 + ... + ak = b1
a12 + a22 + ... + ak2 = b2
...
a1k + a2k + ... + akk = bk
Using Newton's...
How to check if a line is blank using regex
...e character class.
* is zero-or-more repetition of.
In multiline mode, ^ and $ also match the beginning and end of the line.
References:
regular-expressions.info/Anchors, Character Classes, and Repetition.
A non-regex alternative:
You can also check if a given string line is "blank" (i.e. ...
Extracting the last n characters from a ruby string
...ion of Ruby, you could use chars instead of split.
– Andrew Grimm
Oct 23 '11 at 21:15
1
I used "1...
Upgrading Node.js to latest version
So, I have Node.js installed and now when I tried to install Mongoosejs I got an error telling me that I don't have the needed version of Node.js (I have v0.4.11 and v0.4.12 is needed).
...
Automating “enter” keypresses for bash script generating ssh keys
...de a "yes" answer to whatever a program might prompt for). yes is shorter, and should ssh-keygen ever add a question, that will automatically be answered in too. :)
– zrajm
Apr 24 '15 at 11:08
...
Efficiency of purely functional programming
... Pippenger [1996], when comparing a Lisp system that is purely functional (and has strict evaluation semantics, not lazy) to one that can mutate data, an algorithm written for the impure Lisp that runs in O(n) can be translated to an algorithm in the pure Lisp that runs in O(n log n) time (based on ...