From 85297ca4a80e6953919cc2d94852ecb30011159e Mon Sep 17 00:00:00 2001
From: SowinskiBraeden <braeden@sowinski.dev>
Date: Thu, 15 Oct 2026 19:01:09 -0700
Subject: [PATCH] lab 04

---
 labs/04/atomic-weights.txt | 81 ++++++++++++++++++++++++++++++++++++++
 labs/04/lab4a.ex           |  6 +++
 labs/04/lab4b.ex           |  8 ++++
 3 files changed, 95 insertions(+)
 create mode 100644 labs/04/atomic-weights.txt
 create mode 100644 labs/04/lab4a.ex
 create mode 100644 labs/04/lab4b.ex

diff --git a/labs/04/atomic-weights.txt b/labs/04/atomic-weights.txt
new file mode 100644
index 0000000..3bdb70a
--- /dev/null
+++ b/labs/04/atomic-weights.txt
@@ -0,0 +1,81 @@
+1	H	Hydrogen	1.008
+2	He	Helium	4.003
+3	Li	Lithium	6.94
+4	Be	Beryllium	9.012
+5	B	Boron	10.81
+6	C	Carbon	12.011
+7	N	Nitrogen	14.007
+8	O	Oxygen	15.999
+9	F	Fluorine	18.998
+10	Ne	Neon	20.1797
+11	Na	Sodium	22.989
+12	Mg	Magnesium	24.305
+13	Al	Aluminium	26.982
+14	Si	Silicon	28.085
+15	P	Phosphorus	30.974
+16	S	Sulfur	32.06
+17	Cl	Chlorine	35.45
+18	Ar	Argon	39.948
+19	K	Potassium	39.0983
+20	Ca	Calcium	40.078
+21	Sc	Scandium	44.956
+22	Ti	Titanium	47.867
+23	V	Vanadium	50.9415
+24	Cr	Chromium	51.9961
+25	Mn	Manganese	54.938
+26	Fe	Iron	55.845
+27	Co	Cobalt	58.933
+28	Ni	Nickel	58.6934
+29	Cu	Copper	63.546
+30	Zn	Zinc	65.38
+31	Ga	Gallium	69.723
+32	Ge	Germanium	72.630
+33	As	Arsenic	74.922
+34	Se	Selenium	78.971
+35	Br	Bromine	79.904
+36	Kr	Krypton	83.798
+37	Rb	Rubidium	85.4678
+38	Sr	Strontium	87.62
+39	Y	Yttrium	88.906
+40	Zr	Zirconium	91.224
+41	Nb	Niobium	92.906
+42	Mo	Molybdenum	95.95
+44	Ru	Ruthenium	101.07
+45	Rh	Rhodium	102.905
+46	Pd	Palladium	106.42
+47	Ag	Silver	107.8682
+48	Cd	Cadmium	112.414
+49	In	Indium	114.818
+50	Sn	Tin	118.710
+51	Sb	Antimony	121.760
+52	Te	Tellurium	127.60
+53	I	Iodine	126.904
+54	Xe	Xenon	131.293
+55	Cs	Caesium	132.905
+56	Ba	Barium	137.327
+57	La	Lanthanum	138.905
+58	Ce	Cerium	140.116
+59	Pr	Praseodymium     	140.908
+60	Nd	Neodymium	144.242
+62	Sm	Samarium	150.36
+63	Eu	Europium	151.964
+64	Gd	Gadolinium	157.25
+65	Tb	Terbium	158.925
+66	Dy	Dysprosium	162.500
+67	Ho	Holmium	164.930
+68	Er	Erbium	167.259
+69	Tm	Thulium	168.934
+70	Yb	Ytterbium	173.045
+71	Lu	Lutetium	174.9668
+72	Hf	Hafnium	178.486
+73	Ta	Tantalum	180.948
+74	W	Tungsten	183.84
+75	Re	Rhenium	186.207
+76	Os	Osmium	190.23
+77	Ir	Iridium	192.217
+78	Pt	Platinum	195.084
+79	Au	Gold	196.967
+80	Hg	Mercury	200.592
+81	Tl	Thallium	204.38
+82	Pb	Lead	207.2
+83	Bi	Bismuth	208.980
diff --git a/labs/04/lab4a.ex b/labs/04/lab4a.ex
new file mode 100644
index 0000000..9b6a185
--- /dev/null
+++ b/labs/04/lab4a.ex
@@ -0,0 +1,6 @@
+defmodule Lab4a do
+  for line <- String.split(File.read!("atomic-weights.txt"), "\n", trim: true) do
+    [_number, symbol, _name, weight] = String.split(line)
+    def unquote(:"#{String.downcase(symbol)}")(), do: unquote(String.to_float(weight))
+  end
+end
diff --git a/labs/04/lab4b.ex b/labs/04/lab4b.ex
new file mode 100644
index 0000000..5f4456a
--- /dev/null
+++ b/labs/04/lab4b.ex
@@ -0,0 +1,8 @@
+defmodule Lab4b do
+  for line <- String.split(File.read!("atomic-weights.txt"), "\n", trim: true) do
+    [_number, symbol, _name, weight] = String.split(line)
+    def atomic_weight(unquote(symbol)), do: unquote(String.to_float(weight))
+  end
+
+  def atomic_weight(_symbol), do: -1
+end