tweaks.

README.md

@@ -2,17 +2,29 @@
 
 ## About
 
-This repository contains example of very simple code to manipulate samples in various programming languages. As of now, it may be useful for checking the validity of simple estimations.
+This repository contains example of very simple code to manipulate samples in various programming languages. It implements this estimate:
 
-The title of this repository is a pun on two meanings of "time to": "how much time does it take to do x", and "let's do x".
+```
+p_a = 0.8
+p_b = 0.5
+p_c = p_a * p_b
+
+dists = [0, 1, 1 to 3, 2 to 10] # each dist represented as 1M samples
+weights = [(1 - p_c), p_c/2, p_c/4, p_c/4 ]
+
+result = mixture(dists, weights)
+mean(result)
+```
+
+As of now, it may be useful for checking the validity of simple estimations. The title of this repository is a pun on two meanings of "time to": "how much time does it take to do x", and "let's do x".
 
 ## Current languages
 
-- [x] Python
-- [x] R
-- [x] Squiggle 
-- [x] Javascript (NodeJS)
 - [x] C
+- [x] Javascript (NodeJS)
+- [x] Squiggle 
+- [x] R
+- [x] Python
 - [x] Nim 
 
 ## Performance table
@@ -21,7 +33,7 @@ With the [time](https://man7.org/linux/man-pages/man1/time.1.html) tool, using 1
 
 | Language             | Time      |
 |----------------------|-----------|
-| Nim                  | 0m0.183s  |
+| Nim                  | 0m0.153s  |
 | C                    | 0m0,442s  |
 | Node                 | 0m0,732s  |
 | Squiggle             | 0m1,536s  |
@@ -30,7 +42,7 @@ With the [time](https://man7.org/linux/man-pages/man1/time.1.html) tool, using 1
 
 I was very surprised that Node/Squiggle code was almost as fast as the raw C code. For the Python code, it's possible that the lack of speed is more a function of me not being as familiar with Python. It's also very possible that the code would run faster with [PyPy](https://doc.pypy.org).
 
-I was also really happy with trying [Nim](https://nim-lang.org/). The version which beats all others is just the normal usage of Nim, in the "release" compilation mode (the "danger" compilation mode shaves of a few more miliseconds). The Nim version has the particularity that I define the normal function from scratch, using the [Box–Muller transform](https://en.wikipedia.org/wiki/Box%E2%80%93Muller_transform#Basic_form). For Nim I also have a version of the code which takes around 4 seconds, where I define some very inefficient sine & logarithm functions to feed into the Box-Muller method, because it felt like fun to really write a botec tool really from scratch.
+I was also really happy with trying [Nim](https://nim-lang.org/). The version which beats all others is just the fastest "danger" compilation of Nim (the "release" compilation is 0m0.183s instead). The Nim version has the particularity that I define the normal function from scratch, using the [Box–Muller transform](https://en.wikipedia.org/wiki/Box%E2%80%93Muller_transform#Basic_form). For Nim I also have a version of the code which takes around 4 seconds, where I define some very inefficient sine & logarithm functions to feed into the Box-Muller method, because it felt like fun to really write a botec tool really from scratch.
 
 ## Languages I may add later
 

nim/makefile

@@ -8,5 +8,6 @@ run: samples
 	./samples $(VERBOSE)
 
 examine: samples
+	nim c $(VERBOSE) samples.nim && time ./samples $(VERBOSE) && echo
 	nim c $(VERBOSE) -d:release samples.nim && time ./samples $(VERBOSE) && echo
 	nim c $(VERBOSE) -d:danger samples.nim && time ./samples $(VERBOSE)

time.txt

@@ -38,16 +38,23 @@ sys     0m0,052s
 
 ## Nim
 
-nim c --verbosity:0 -d:release samples.nim && time ./samples --verbosity:0 && echo
+nim c --verbosity:0 samples.nim && time ./samples --verbosity:0 && echo
-0.8873815480558296
+0.8881633539025908
 
-real    0m0.183s
+real    0m0.706s
-user    0m0.150s
+user    0m0.685s
+sys     0m0.020s
+
+nim c --verbosity:0 -d:release samples.nim && time ./samples --verbosity:0 && echo
+0.8861663545062978
+
+real    0m0.184s
+user    0m0.151s
 sys     0m0.032s
 
 nim c --verbosity:0 -d:danger samples.nim && time ./samples --verbosity:0
-0.8886260086130379
+0.8879220244477399
 
-real    0m0.157s
+real    0m0.158s
-user    0m0.136s
+user    0m0.130s
-sys     0m0.020s
+sys     0m0.028s