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30secondsofcode
2019-09-22 12:46:49 +00:00
parent ab16801793
commit 29daf0479d
3 changed files with 56 additions and 69 deletions
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30
snippet_data/snippetList.json
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@ -228,7 +228,7 @@
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@ -329,7 +329,7 @@
"type": "snippetListing",
"title": "every",
"attributes": {
"text": "Returns `True` if the provided function returns `True` for every element in the list, `False` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `True` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `True`.\n\n",
"text": "Returns `True` if the provided function returns `True` for every element in the list, `False` otherwise.\n\nUse `all()` in combination with `map` and `fn` to check if `fn` returns `True` for all elements in the list.\n\n",
"tags": [
"list",
"function",
@ -337,7 +337,7 @@
]
},
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{
@ -437,7 +437,7 @@
"type": "snippetListing",
"title": "group_by",
"attributes": {
"text": "Groups the elements of a list based on the given function.\n\nUse `list()` in combination with `map()` and `fn` to map the values of the list to the keys of an object.\nUse list comprehension to map each element to the appropriate `key`.\n\n",
"text": "Groups the elements of a list based on the given function.\n\nUse `map()` and `fn` to map the values of the list to the keys of an object.\nUse list comprehension to map each element to the appropriate `key`.\n\n",
"tags": [
"list",
"object",
@ -445,7 +445,7 @@
]
},
"meta": {
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@ -778,7 +778,7 @@
"type": "snippetListing",
"title": "max_by",
"attributes": {
"text": "Returns the maximum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `max()` to return the maximum value.\n\n",
"text": "Returns the maximum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `max()` to return the maximum value.\n\n",
"tags": [
"math",
"list",
@ -787,7 +787,7 @@
]
},
"meta": {
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},
{
@ -811,7 +811,7 @@
"type": "snippetListing",
"title": "min_by",
"attributes": {
"text": "Returns the minimum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `min()` to return the minimum value.\n\n",
"text": "Returns the minimum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `min()` to return the minimum value.\n\n",
"tags": [
"math",
"list",
@ -820,7 +820,7 @@
]
},
"meta": {
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{
@ -844,7 +844,7 @@
"type": "snippetListing",
"title": "none",
"attributes": {
"text": "Returns `False` if the provided function returns `True` for at least one element in the list, `True` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `False` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `False`.\n\n",
"text": "Returns `False` if the provided function returns `True` for at least one element in the list, `True` otherwise.\n\nUse `all()` in combination with `map()` and `fn` to check if `fn` returns `False` for all the elements in the list.\n\n",
"tags": [
"list",
"function",
@ -852,7 +852,7 @@
]
},
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@ -968,7 +968,7 @@
"type": "snippetListing",
"title": "some",
"attributes": {
"text": "Returns `True` if the provided function returns `True` for at least one element in the list, `False` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `True` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `True`.\n\n",
"text": "Returns `True` if the provided function returns `True` for at least one element in the list, `False` otherwise.\n\nUse `any()` in combination with `map()` and `fn` to check if `fn` returns `True` for any element in the list.\n\n",
"tags": [
"list",
"function",
@ -976,7 +976,7 @@
]
},
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{
@ -1015,7 +1015,7 @@
"type": "snippetListing",
"title": "sum_by",
"attributes": {
"text": "Returns the sum of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `sum()` to return the sum of the values.\n\n",
"text": "Returns the sum of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `sum()` to return the sum of the values.\n\n",
"tags": [
"math",
"list",
@ -1024,7 +1024,7 @@
]
},
"meta": {
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46
snippet_data/snippets.json
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@ -294,8 +294,8 @@
"fileName": "count_by.md",
"text": "Groups the elements of a list based on the given function and returns the count of elements in each group.\n\nUse `map()` to map the values of the given list using the given function.\nIterate over the map and increase the element count each time it occurs.\n\n",
"codeBlocks": {
"code": "def count_by(arr, fn=lambda x: x):\n key = {}\n for el in map(fn, arr):\n key[el] = 0 if el not in key else key[el]\n key[el] += 1\n return key",
"example": "from math import floor\ncount_by([6.1, 4.2, 6.3], floor) # {4: 1, 6: 2}\ncount_by(['one', 'two', 'three'], len) # {3: 2, 5: 1}"
"code": "def count_by(arr, fn=lambda x: x):\n key = {}\n for el in map(fn, arr):\n key[el] = 1 if el not in key else key[el] + 1\n return key",
"example": "from math import floor\ncount_by([6.1, 4.2, 6.3], floor) # {6: 2, 4: 1}\ncount_by(['one', 'two', 'three'], len) # {3: 2, 5: 1}"
},
"tags": [
"list",
@ -303,7 +303,7 @@
]
},
"meta": {
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{
@ -435,9 +435,9 @@
"type": "snippet",
"attributes": {
"fileName": "every.md",
"text": "Returns `True` if the provided function returns `True` for every element in the list, `False` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `True` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `True`.\n\n",
"text": "Returns `True` if the provided function returns `True` for every element in the list, `False` otherwise.\n\nUse `all()` in combination with `map` and `fn` to check if `fn` returns `True` for all elements in the list.\n\n",
"codeBlocks": {
"code": "def every(lst, fn=lambda x: not not x):\n for el in lst:\n if not fn(el):\n return False\n return True",
"code": "def every(lst, fn=lambda x: x):\n return all(map(fn, lst))",
"example": "every([4, 2, 3], lambda x: x > 1) # True\nevery([1, 2, 3]) # True"
},
"tags": [
@ -447,7 +447,7 @@
]
},
"meta": {
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},
{
@ -578,7 +578,7 @@
"type": "snippet",
"attributes": {
"fileName": "group_by.md",
"text": "Groups the elements of a list based on the given function.\n\nUse `list()` in combination with `map()` and `fn` to map the values of the list to the keys of an object.\nUse list comprehension to map each element to the appropriate `key`.\n\n",
"text": "Groups the elements of a list based on the given function.\n\nUse `map()` and `fn` to map the values of the list to the keys of an object.\nUse list comprehension to map each element to the appropriate `key`.\n\n",
"codeBlocks": {
"code": "def group_by(lst, fn):\n return {key : [el for el in lst if fn(el) == key] for key in map(fn,lst)}",
"example": "import math\ngroup_by([6.1, 4.2, 6.3], math.floor) # {4: [4.2], 6: [6.1, 6.3]}\ngroup_by(['one', 'two', 'three'], len) # {3: ['one', 'two'], 5: ['three']}"
@ -590,7 +590,7 @@
]
},
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},
{
@ -1029,9 +1029,9 @@
"type": "snippet",
"attributes": {
"fileName": "max_by.md",
"text": "Returns the maximum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `max()` to return the maximum value.\n\n",
"text": "Returns the maximum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `max()` to return the maximum value.\n\n",
"codeBlocks": {
"code": "def max_by(lst, fn):\n return max(list(map(fn,lst)))",
"code": "def max_by(lst, fn):\n return max(map(fn,lst))",
"example": "max_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 8"
},
"tags": [
@ -1042,7 +1042,7 @@
]
},
"meta": {
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{
@ -1072,9 +1072,9 @@
"type": "snippet",
"attributes": {
"fileName": "min_by.md",
"text": "Returns the minimum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `min()` to return the minimum value.\n\n",
"text": "Returns the minimum value of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `min()` to return the minimum value.\n\n",
"codeBlocks": {
"code": "def min_by(lst, fn):\n return min(list(map(fn,lst)))",
"code": "def min_by(lst, fn):\n return min(map(fn,lst))",
"example": "min_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 2"
},
"tags": [
@ -1085,7 +1085,7 @@
]
},
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}
},
{
@ -1115,9 +1115,9 @@
"type": "snippet",
"attributes": {
"fileName": "none.md",
"text": "Returns `False` if the provided function returns `True` for at least one element in the list, `True` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `False` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `False`.\n\n",
"text": "Returns `False` if the provided function returns `True` for at least one element in the list, `True` otherwise.\n\nUse `all()` in combination with `map()` and `fn` to check if `fn` returns `False` for all the elements in the list.\n\n",
"codeBlocks": {
"code": "def none(lst, fn=lambda x: not not x):\n for el in lst:\n if fn(el):\n return False\n return True",
"code": "def none(lst, fn=lambda x: x):\n return all(map(lambda x: not fn(x), lst))",
"example": "none([0, 1, 2, 0], lambda x: x >= 2 ) # False\nnone([0, 0, 0]) # True"
},
"tags": [
@ -1127,7 +1127,7 @@
]
},
"meta": {
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{
@ -1279,9 +1279,9 @@
"type": "snippet",
"attributes": {
"fileName": "some.md",
"text": "Returns `True` if the provided function returns `True` for at least one element in the list, `False` otherwise.\n\nIterate over the elements of the list to test if every element in the list returns `True` based on `fn`.\nOmit the seconds argument, `fn`, to check if all elements are `True`.\n\n",
"text": "Returns `True` if the provided function returns `True` for at least one element in the list, `False` otherwise.\n\nUse `any()` in combination with `map()` and `fn` to check if `fn` returns `True` for any element in the list.\n\n",
"codeBlocks": {
"code": "def some(lst, fn=lambda x: not not x):\n for el in lst:\n if fn(el):\n return True\n return False",
"code": "def some(lst, fn=lambda x: x):\n return any(map(fn, lst))",
"example": "some([0, 1, 2, 0], lambda x: x >= 2 ) # True\nsome([0, 0, 1, 0]) # True"
},
"tags": [
@ -1291,7 +1291,7 @@
]
},
"meta": {
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},
{
@ -1341,9 +1341,9 @@
"type": "snippet",
"attributes": {
"fileName": "sum_by.md",
"text": "Returns the sum of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, convert to a `list` and use `sum()` to return the sum of the values.\n\n",
"text": "Returns the sum of a list, after mapping each element to a value using the provided function.\n\nUse `map()` with `fn` to map each element to a value using the provided function, use `sum()` to return the sum of the values.\n\n",
"codeBlocks": {
"code": "def sum_by(lst, fn):\n return sum(list(map(fn,lst)))",
"code": "def sum_by(lst, fn):\n return sum(map(fn,lst))",
"example": "sum_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 20"
},
"tags": [
@ -1354,7 +1354,7 @@
]
},
"meta": {
"hash": "99f5487bf6ed90107254caf6ac90c2f7930266203ae33e9b60de6d8ed1a2ba45"
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{