shaunlebron

// source: http://java.dzone.com/articles/using-lambda-expression-sort

// sort by first name
people.sort((p1, p2) -> p1.firstName.compareTo(p2.firstName));

// sort by full name
String fullName(Person p) { return p.firstName + " " + p.lastName; }
people.sort((p1, p2) -> fullName(p1).compareTo(fullName(p2)));

shaunlebron

/*
2D Angle Interpolation (shortest distance)

Parameters:
a0 = start angle
a1 = end angle
t = interpolation factor (0.0=start, 1.0=end)

Benefits:
1. Angles do NOT need to be normalized.

shaunlebron

/*
You can use this script with Google Swiffy to produce SVG frames from an SWF animation.

1. Upload your SWF file to Google Swiffy --> https://www.google.com/doubleclick/studio/swiffy/
2. Save the swiffy output HTML page locally.
3. Edit the page to include this script with <script src="getSvgFrames.js"></script>
4. Open the page in Firefox to see the SVG download links appear for each frame.
*/
(function(){ 
	var url = window.location.pathname;

shaunlebron

• item 1

• item 2

• item 3

  // code here

should be equivalent to...

• item 1

shaunlebron

entries = getListOfTableEntriesSomeWhere()
entryTree = MyTree(entries)

################################

def group_entries(groupclass, entries, keyfunc):
    return [groupclass(k,g) for k,g in itertools.groupby(entries,keyfunc)]

key_sys    = lambda x: x.sys
key_subsys = lambda x: x.subsys

shaunlebron

Iterating Combinations

If you're trying to iterate all combinations of k=5 on n=36, this is how you loop through them.

int k = 5;
int n = 36;
int count = 0;
for (int i1=1; i1 <= n-k+1; i1++)

shaunlebron

% the tile width of the rectangular map
#const width=4.

positions(0..11).
rotations(0..3).

% piece(number, side, side type [g=grass, w=water, c=city, r=road]).
piece( 1,0,g ;; 1,1,g ;; 1,2,g ;; 1,3,w).
piece( 2,0,g ;; 2,1,g ;; 2,2,g ;; 2,3,w).
piece( 3,0,g ;; 3,1,w ;; 3,2,g ;; 3,3,w).

shaunlebron

def print_target_moves(aTimeCapacity, bTimeCapacity, targetTime):
    '''
    Given two hourglasses with respective time capacities,
    print out a process for measuring the given target time
    without going over that time.
    An hour glass can only be flipped when any of them have run out.
    TODO: generalize to multiple hour-glasses
    '''
    moves = []