In JVM Clojure, Exceptions are for operating errors ("something went wrong") and Assertions are for programmer and correctness errors ("this program is wrong").
An assert might be the right tool if throwing an Exception isn't enough. Use
them when the assertion failing means
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| # 假設參數 | |
| lambda_visits = 5 # 主動拜訪次數的均值 | |
| lambda_leads = 3 # 主動找上門的客戶數均值 | |
| alpha = 0.1 # 主動拜訪轉換率 | |
| beta = 0.5 # 主動找上門轉換率 | |
| # 蒙地卡羅模擬 |
| Find People Born in the Fifties | |
| Using the sandbox on the right, write and execute a query to return people born in the 1950’s (1950 - 1959) that are both Actors and Directors. | |
| How many Person nodes are returned? | |
| ``` | |
| MATCH(p:Actor) | |
| WHERE p:Director AND date('1950-01-01') <= date(p.born) < date('1959-12-31') | |
| RETURN count(p) | |
| ``` |
| (ns myproject | |
| "FIXME: my new org.corfield.new/scratch project." | |
| (:require [clojure.walk :as walk])) | |
| (def tree | |
| (list #:cil{:id 2 | |
| :children | |
| (list #:citl{:id 2 :ip 2 | |
| :children | |
| (list #:citl{:id 5 :tp 2} |
| [:customer-invoice | |
| [:div.bg-violet-100.m-2.p-2.flex | |
| [:p.flex-auto "Reference-number: invoice 1"] | |
| [:p.flex-auto "status: unreleased"]] | |
| [:customer-invoice-line | |
| [:div.bg-violet-100.m-2.p-2.flex | |
| [:p.flex-auto "Id: 1"] | |
| [:p.flex-auto "Invoice: invoice 1"] | |
| [:p.flex-auto "Amount: 2000"]] | |
| [:customer-invoice-tax-line |
| (ns myproject | |
| "FIXME: my new org.corfield.new/scratch project." | |
| (:require [clojure.walk :as walk])) | |
| (def lines | |
| (list {:reference-number "invoice 1" | |
| :status "unreleased"} | |
| (list {:invoice "invoice 1" | |
| :account "100" | |
| :desp "customer invoice line" |
REPLWARE 建議的資料分析技術棧 (modern data stack) 主要有下列特色：