Added Term snippets

Author: Corey Schafer

Closure/html_closure.js

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+function html_tag(tag) {
+  function print_tag(text) {
+    return '<'+tag+'>'+text+'</'+tag+'>'
+  };
+  return print_tag
+};
+
+h1_tag = html_tag('h1')
+
+console.log(h1_tag('This is a Headline!'))

Closure/html_closure.py

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+def outer():
+    x = 10
+    def inner():
+        y = 20
+    inner()
+    return x + y
+
+my_func = outer
+
+print my_func()
+
+# h1_tag = html_tag('h1')
+# print h1_tag
+
+# def html_tag(tag):
+#     def print_tag(text):
+#         return '<{0}>{1}</{0}>'.format(tag,text)
+#     return print_tag
+
+# h1_tag = html_tag('h1')
+# print h1_tag('This is a headline!')

Combinations-Permutations/comb_perm.py

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+import itertools
+
+my_list = [1,2,3]
+
+# combinations = itertools.combinations(my_list, 2)
+# for c in combinations:
+#     print c
+
+permutations = itertools.permutations(my_list, 2)
+for p in permutations:
+    print p

Combinations-Permutations/examples.py

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+import itertools
+
+# my_list = [1,2,3,4,5,6]
+
+# combinations = itertools.combinations(my_list, 3)
+# permutations = itertools.permutations(my_list, 3)
+
+# print [result for result in combinations if sum(result) == 10]
+
+word = 'sample'
+my_letters = 'plmeas'
+
+combinations = itertools.combinations(my_letters, 6)
+permutations = itertools.permutations(my_letters, 6)
+
+for p in permutations:
+    # print p
+    if ''.join(p) == word:
+        print 'Match!'
+        break
+else:
+    print 'No Match!'

FC_Functions/fc_functions.py

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+
+def html_tag(tag):
+
+    def wrap_text(msg):
+        print('<{0}>{1}</{0}>'.format(tag, msg))
+
+    return wrap_text
+
+print_h1 = html_tag('h1')
+print_h1('Test Headline!')
+print_h1('Another Headline!')
+
+print_p = html_tag('p')
+print_p('Test Paragraph!')

Idempotence/methods.txt

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+HTTP METHODS
+
+GET         <url>/users/123
+PUT
+POST
+DELETE

Idempotence/test.py

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+# f(x)
+# add_ten(num)
+def add_ten(num):
+    return num + 10
+
+# f(f(x))   =  f(x)
+#   f(f(10)) = 30 | f(10) = 20
+# print add_ten(add_ten(10))
+
+print abs(abs(abs(-10)))
+# abs(-10) == 10
+# abs(10) == 10
+# abs(10) == 10
+
+a = 10

Memoization/sample.py

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+import time
+
+ef_cache = {}
+
+def expensive_func(num):
+    if num in ef_cache:
+        return ef_cache[num]
+
+    print "Computing {}...".format(num)
+    time.sleep(1)
+    result = num*num
+    ef_cache[num] = result
+    return result
+
+result = expensive_func(4)
+print result
+
+result = expensive_func(10)
+print result
+
+result = expensive_func(4)
+print result
+
+result = expensive_func(10)
+print result

Mutable/code.py

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+
+print 'Address of a is: {}'.format(id(a))
+
+# a[0] = ''
+# print a
+# print 'Address of a is: {}'.format(id(a))

Mutable/concat.py

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+
+employees = ['Corey', 'John', 'Rick', 'Steve', 'Carl', 'Adam']
+
+output = '<ul>\n'
+
+for employee in employees:
+    output += '\t<li>{}</li>\n'.format(employee)
+    print 'Address of output is {}'.format(id(output))
+
+output += '</ul>'
+
+print output
+
+print '\n'

Mutable/mutable.py

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+
+a = [1,2,3,4,5]
+print a
+print 'Address of a is: {}'.format(id(a))
+
+a[0] = 6
+print a
+print 'Address of a is: {}'.format(id(a))

String Interpolation/test.py

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+name = 'Corey'
+age = 28
+
+# greeting = 'My name is ' + name + ' and I am ' + str(age) + ' years old'
+
+greeting = 'I am {age} years old and my name is {name}'.format(name=name, age=age)
+
+print greeting
+