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Iterate all files in a directory using a 'for' loop
...the files (and only the files) in the current directory:
for /r %i in (*) do echo %i
Also if you run that command in a batch file you need to double the % signs.
for /r %%i in (*) do echo %%i
(thanks @agnul)
share
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Best practices with STDIN in Ruby?
...t gets all input from named files or all from STDIN.
ARGF.each_with_index do |line, idx|
print ARGF.filename, ":", idx, ";", line
end
# print all the lines in every file passed via command line that contains login
ARGF.each do |line|
puts line if line =~ /login/
end
Thank goodness we did...
How do I run only specific tests in Rspec?
...
It isn't easy to find the documentation, but you can tag examples with a hash. Eg.
# spec/my_spec.rb
describe SomeContext do
it "won't run this" do
raise "never reached"
end
it "will run this", :focus => true do
1.should == 1
end
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do { … } while (0) — what is it good for? [duplicate]
...dition)
FOO(x);
else // syntax error here
...;
Even using braces doesn't help:
#define FOO(x) { foo(x); bar(x); }
Using this in an if statement would require that you omit the semicolon, which is counterintuitive:
if (condition)
FOO(x)
else
...
If you define FOO like this:
#...
How do I put variables inside javascript strings?
That's how you do it in python. How can you do that in javascript/node.js?
13 Answers
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How do I create a message box with “Yes”, “No” choices and a DialogResult?
...plish this. It is simple, but since there is no DialogResult returned, how do I retrieve the result?
11 Answers
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How do I return early from a rake task?
I have a rake task where I do some checks at the beginning, if one of the checks fails I would like to return early from the rake task, I don't want to execute any of the remaining code.
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Iterate through every file in one directory
How do I write a loop in ruby so that I can execute a block of code on each file?
8 Answers
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Asynchronous Requests with Python requests
I tried the sample provided within the documentation of the requests library for python.
12 Answers
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Swift: Testing optionals for nil
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In Xcode Beta 5, they no longer let you do:
var xyz : NSString?
if xyz {
// Do something using `xyz`.
}
This produces an error:
does not conform to protocol 'BooleanType.Protocol'
You have to use one of these forms:
if xyz != nil {
// Do something ...