num-utils in Crystal Lang

num-utils inspired tools written in Crystal Lang.

Compile

You'll need Crystal Lang - this is tested with 1.2.1

crystal build /path/to/numsum-crystal.cr --static --release --progress

Usage examples:

Generate a text file with random numbers in it

for i in {1..10}; do echo $RANDOM >> test.txt; done
cat test.txt 
1126
31446
12418
12323
22716
14055
2050
19221
3488
11834

To get the summary:

cat test.txt | ./numsum-crystal 
130677

Comparison to numsum from the original num-utils:

Generate a text file with ten million numbers in it:

for i in {1..10000000}; do echo $RANDOM >> /dev/shm/test.txt; done

Benchmark with numsum:

for i in {1..10}; do SECONDS=0; cat test.txt | numsum; echo "Seconds: ${SECONDS}"; done
163833895278
Seconds: 31
163833895278
Seconds: 32
163833895278
Seconds: 32
163833895278
Seconds: 32
163833895278
Seconds: 31
163833895278
Seconds: 31
163833895278
Seconds: 33
163833895278
Seconds: 31
163833895278
Seconds: 31
163833895278
Seconds: 31

Benchmark with numsum-crystal:

for i in {1..10}; do SECONDS=0; cat test.txt | ./numsum-crystal; echo "Seconds: ${SECONDS}"; done
163833895278.0
Seconds: 0
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 1
163833895278.0
Seconds: 0
163833895278.0
Seconds: 1