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Cost of len() function
...ength of the element - very fast) on every type you've mentioned, plus set and others such as array.array.
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How do you get assembler output from C/C++ source in gcc?
... the preprocessor (cpp) over helloworld.c, perform the initial compilation and then stop before the assembler is run.
By default this will output a file helloworld.s. The output file can be still be set by using the -o option.
gcc -S -o my_asm_output.s helloworld.c
Of course this only works if y...
Find and replace with sed in directory and sub directories
I run this command to find and replace all occurrences of 'apple' with 'orange' in all files in root of my site:
7 Answers
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Colorized Ruby output to the terminal [closed]
Using Ruby, how can I perform background and foreground text colorization for output in the terminal?
11 Answers
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What is the best way to test for an empty string in Go?
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Both styles are used within the Go's standard libraries.
if len(s) > 0 { ... }
can be found in the strconv package: http://golang.org/src/pkg/strconv/atoi.go
if s != "" { ... }
can be found in the encoding/json package: http://golang.org/src/pkg/encoding/...
Is there a difference between /\s/g and /\s+/g?
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\s means "one space", and \s+ means "one or more spaces".
But, because you're using the /g flag (replace all occurrences) and replacing with the empty string, your two expressions have the same effect.
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Execute bash script from URL
...nately, leave off the initial redirection on yours, which is redirecting standard input; bash takes a filename to execute just fine without redirection, and <(command) syntax provides a path.
bash <(curl -s http://mywebsite.com/myscript.txt)
It may be clearer if you look at the output of ec...
How to convert a char to a String?
I have a char and I need a String . How do I convert from one to the other?
12 Answers
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Parsing JSON using Json.net
... JSON using the JSon.Net library. The documentation seems a little sparse and I'm confused as to how to accomplish what I need. Here is the format for the JSON I need to parse through.
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What's the main difference between int.Parse() and Convert.ToInt32
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If you've got a string, and you expect it to always be an integer (say, if some web service is handing you an integer in string format), you'd use Int32.Parse().
If you're collecting input from a user, you'd generally use Int32.TryParse(), since it...