Euler.hs Tips and Tricks for Everyday Coding

file_sizes.log

one:new_euler xavierlange$ ls prob[1-9] | xargs du
17224	prob1
17224	prob2
17240	prob3
17224	prob4
17256	prob5
17224	prob6

one:new_euler xavierlange$ ls prob[1-9] | xargs du -h
8.4M	prob1
8.4M	prob2
8.4M	prob3
8.4M	prob4
8.4M	prob5
8.4M	prob6

libraries_used.log

one:new_euler xavierlange$ otool -L prob10
prob10:
	/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.4)
	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)

Makefile

.SUFFIXES: .hs .o
SRCS=$(wildcard *.hs)
OBJS=$(patsubst %.hs,%.o,${SRCS})

GHC_FLAGS=-O2 --make

%.o: %.hs
	ghc ${GHC_FLAGS} $<

.PHONY: all
all: ${OBJS}

clean:
	rm -rf *.hi *.o

OtherModule.hs

module OtherModule where
import SomeName (sampleFunction)

-- Now we only have access to sampleFunction -- we know nothing of anotherFunction

SomeName.hs

module SomeName where
-- Declare module's functions
-- in the preceding lines

sampleFunction = reverse

anotherFunction = flip