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crystalattice / copying_dicts.py
Created April 2, 2018 00:33
hardness_scale = {"talc": 1, "gypsum": 3, "calcite": 9}
minerals = {}
for a_key in hardness_scale.keys():
minerals[a_key] = hardness_scale[a_key]
print(minerals) #{'talc': 1, 'gypsum': 3, 'calcite': 9}
for a_key in hardness_scale:
minerals[a_key] = hardness_scale[a_key]
print(minerals) #{'talc': 1, 'gypsum': 3, 'calcite': 9}
@crystalattice
crystalattice / extending_dict.py
Created April 1, 2018 19:23
d1 = {"a":1, "b":2, "c":3}
d2 = {"x":4, "y":5, "z":6}
for key in d1:
d2[key] = d1[key]
# print(d2)
#{'x': 4, 'y': 5, 'z': 6, 'a': 1, 'b': 2, 'c': 3}
@crystalattice
crystalattice / Thinkful_JS_Object_Drills.js
Created December 29, 2017 23:32
//Object creator
function createMyObject() {
return {
foo: "bar",
answerToUniverse: 42,
"olly olly": "oxen free",
sayHello: function() {
return "hello";
}
@crystalattice
crystalattice / Thinkful_JS_Scope.txt
Created December 29, 2017 21:42
What is scope? Your explanation should include the idea of global vs. local scope.
Scope is the namespace of a data element. Global scope encompasses the entire code project; global values can be called anywhere within the project. Local scope is contained with a particular function; other functions cannot access those values. It also means that functions within functions cannot be accessed outside the containing function.
Why are global variables avoided?
Global variables can overstep their bounds and cause unintended side effects if they are manipulated in a way that wasn't planned for. For example, if a developer has a global variable and a local variable with the same name, she may forget that fact and call the global variable instead of the local variable, changing the global value and ultimately changing the result of the program.
Explain JavaScript's strict mode
@crystalattice
crystalattice / Thinkful_JS_Loops_Drills.js
Created December 29, 2017 21:18
//Min-max
function max(numbers) {
var high = numbers[0];
for (var i = 0; i <= numbers.length; i++) {
if (numbers[i] > high) {
high = numbers[i];
}
}
return high;
}
@crystalattice
crystalattice / Thinkful_JS_Array_Drills.js
Created December 28, 2017 21:45
//Make List
function makeList(item1, item2, item3) {
return list = [item1, item2, item3];
}
//Add to array
function addToList(list, item) {
var list = list;
list.push(item);
return list;
@crystalattice
crystalattice / Thinkful_JS_Logic_Drills.js
Created December 28, 2017 20:09
//Traffic Light
function doTrafficLights() {
var activeLight = getActiveLight();
if (activeLight === "red"){
turnRed();}
else if (activeLight === "yellow"){
turnYellow();}
else if (activeLight === "green"){
turnGreen();}
@crystalattice
crystalattice / Thinkful_JS_Number_Drills.js
Created December 28, 2017 19:52
//Area
function computeArea(width, height) {
return width * height;
}
//Temp conversion
function celsToFahr(celsTemp) {
return (celsTemp * 9)/5 + 32;
}
@crystalattice
crystalattice / Thinkful_JS_String_Drills.js
Created December 28, 2017 19:44
//WisePerson generator
function wisePerson(wiseType, whatToSay) {
return ("A wise " + wiseType + " once said: \"" +
whatToSay + "\".");
console.log(phrase);
}
//Shouter
function shouter(whatToShout) {
return whatToShout.toUpperCase() + "!!!";
@crystalattice
crystalattice / Research Questions.txt
Created September 12, 2017 22:24
1) What is the 1994 rate of juvenile delinquency in the U.S.? Good
2) What can we do to reduce juvenile delinquency in the U.S.? Bad
a) What has been done to address juvenile delinquency?
b) What are the most effective ways to reduce delinquency?
3) Does education play a role in reducing juvenile delinquents' return to crime? Good
4) How many customers does AT&T currently serve in Washington, DC? Good
5) What factors lead consumers to choose AT&T over other service providers? Good
6) How can AT&T attract more customers? Bad
a) For a given scenario, does the number of customers increase?
7) Why did the Challenger Shuttle explode? Bad