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D3
Bring your data to life.
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d3-array
By
Fil
Edited
Oct 24, 2023
ISC
10 stars
Insert cell
Insert cell
elements
=
[
"B"
,
"D"
,
"A"
,
"F"
,
"C"
]
Insert cell
first
=
d3
.
least
(
elements
)
Insert cell
last
=
d3
.
greatest
(
elements
)
Insert cell
Insert cell
firstIndex
=
d3
.
leastIndex
(
elements
)
Insert cell
lastIndex
=
d3
.
greatestIndex
(
elements
)
Insert cell
[
elements
[
firstIndex
]
,
elements
[
lastIndex
]
]
Insert cell
Insert cell
friends
=
[
{
name
:
"BORIS"
,
age
:
15
}
,
{
name
:
"bastien"
,
age
:
2
}
,
{
name
:
"carmen D."
,
age
:
18
}
,
{
name
:
"DIVINE"
,
age
:
35
}
]
Insert cell
d3
.
least
(
friends
,
(
a
,
b
)
=>
d3
.
ascending
(
a
.
age
,
b
.
age
)
)
Insert cell
d3
.
greatest
(
friends
,
(
a
,
b
)
=>
d3
.
ascending
(
a
.
age
,
b
.
age
)
)
Insert cell
Insert cell
d3
.
least
(
friends
,
d
=>
d
.
age
)
Insert cell
d3
.
greatest
(
friends
,
d
=>
d
.
age
)
Insert cell
Insert cell
d3
.
min
(
friends
,
d
=>
d
.
age
)
Insert cell
d3
.
max
(
friends
,
d
=>
d
.
age
)
Insert cell
Insert cell
d3
.
least
(
[
]
)
Insert cell
d3
.
leastIndex
(
[
NaN
,
undefined
,
,
]
)
Insert cell
Insert cell
d3
.
least
(
[
{
value
:
10
,
index
:
0
}
,
{
value
:
5
,
index
:
1
}
/* smallest */
,
{
value
:
15
,
index
:
2
}
,
{
value
:
5
,
index
:
3
}
/* smallest too! */
]
,
d
=>
d
.
value
)
Insert cell
d3
.
leastIndex
(
[
{
value
:
10
,
index
:
0
}
,
{
value
:
5
,
index
:
1
}
/* smallest */
,
{
value
:
15
,
index
:
2
}
,
{
value
:
5
,
index
:
3
}
/* smallest too! */
]
,
d
=>
d
.
value
)
Insert cell
Insert cell
d3
.
least
(
friends
,
d
=>
d
.
name
)
// 🌶 BORIS < bastien
Insert cell
Insert cell
d3
.
least
(
friends
,
d
=>
d
.
name
.
toLowerCase
(
)
)
// boris > bastien
Insert cell
Insert cell
name
=
d
=>
d
.
name
.
toLowerCase
(
)
Insert cell
d3
.
least
(
friends
,
name
)
Insert cell
Insert cell
d3
.
greatest
(
friends
,
name
)
Insert cell
d3
.
least
(
friends
,
(
a
,
b
)
=>
d3
.
descending
(
name
(
a
)
,
name
(
b
)
)
)
Insert cell
Insert cell
letters
=
new
Set
(
[
...
"forwhomthebelltolls"
]
)
Insert cell
d3
.
least
(
letters
)
Insert cell
Insert cell
counts
=
d3
.
rollup
(
"forwhomthebelltolls"
,
v
=>
v
.
length
,
d
=>
d
)
Insert cell
d3
.
least
(
counts
,
(
[
,
count
]
)
=>
count
)
Insert cell
Insert cell
d3
.
least
(
counts
,
(
[
,
count
]
)
=>
-
count
)
Insert cell
Insert cell
d3
.
least
(
counts
,
(
[
,
a
]
,
[
,
b
]
)
=>
d3
.
descending
(
a
,
b
)
)
Insert cell
Insert cell
d3
.
least
(
counts
,
(
a
,
b
)
=>
d3
.
descending
(
a
[
1
]
,
b
[
1
]
)
)
Insert cell
Insert cell
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