scheme

sicp每日一题[2.77]Louis Reasoner tries to evaluate the expression (magnitude z) where z is the object shown in Figure 2.24. To his surprise, instead of the answer she gets an error message from apply-generic, saying there is no method for the operation magnitude on the typ

sicp每日一题[2.63-2.64]Each of the following two procedures converts a binary tree to a list.

跳动的世界线

详解安卓和IOS的唤起APP的机制，包括第三方平台的唤起方法比如微信网页唤起APP是一种常见的跨平台交互方式，它允许用户从网页直接跳转到移动应用程序。这种技术广泛应用于各种场景，比如让用户在浏览器中点击链接后直接打开某个应用，或者从网页引导用户下载安装应用。实现这一功能主要依赖于URL Scheme、Universal Links（iOS）或App Links（Android）等技术。

sicp每日一题[2.31]Abstract your answer to Exercise 2.30 to produce a procedure t r e e − m a p tree-map tree−map with the property that s q u a r e − t r e e square-tree square−tree could be defined as

sicp每日一题[2.13-2.16]Show that under the assumption of small percentage tolerances there is a simple formula for the approximate percentage tolerance of the product of two intervals in terms of the tolerances of the factors. You may simplify the problem by assumingthat all nu

sicp每日一题[2.1]Exercise 2.1: Define a better version of make-rat that handles both positive and negative arguments. make-rat should normalize the sign so that if the rational number is positive, both the numerator and denominator are positive, and if the rational number

sicp每日一题[1.45]We saw in Section 1.3.3 that attempting to compute square roots by naively finding a fixed point of y->x/y does not converge, and that this can be fixed by average damping. The same method works for finding cube roots as fixed points of the average-damped

Yongqiang Cheng

PyCharm 主题和字体 (Scheme & Editor Font)File -> Settings -> Editor -> Colors & Fonts -> Font

Chrome 插件匹配模式（Match patterns）规则匹配模式是采用以下结构的网址，用于指定一组网址：必须是以下内容之一，并使用双斜线 (//) 与格式的其余部分分隔开：