Data Visualization with Ruby and RMagick - Where Are Those Bikes ?
Velib is a pretty neat service I use every week to move inside Paris. I have a annual subscription (30€) which let me borrow a bike for half an hour from one station and leave it to another. As both a confirmed geek and a Velib fan, I wanted to get an overview of the areas where bikes are available at a specific time of the day (here on 26th of March, around 1:43pm): This article (for educational
memoization
What is Memoization? Memoization is storing the result of a particular calculation, so that the next time the result is needed, instead of performing the calculation again, the stored result is taken instead. Where memoization can be useful is for costly, but pure functions: the result for a set of input values is stored in some kind of map (association list, hash table, ...) to allow for a cheape
1
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
