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POJ 1979 Red and Black
Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From ...
分类:其他好文   时间:2019-07-16 20:05:48    阅读次数:148
解决问题 inner element must either be a resource reference or empty.
-Q: 错误<item>内部元素必须是资源引用或空 升级Andriod Studio之后编译发现如下错误 Android resource compilation failed ***\app\build\intermediates\incremental\mergeDebugResources\m ...
分类:其他好文   时间:2019-07-16 18:53:38    阅读次数:431
react-native启动时红屏报错:Unable to load script.Make sure you're either running a metro server or that ....
一、报错信息内容 我是在Android Studio中运行启动react-native项目时报的这个错误 报错提示:Unable to load script.Make sure you're either running a metro server( run 'react-native star ...
分类:其他好文   时间:2019-07-15 17:30:41    阅读次数:2200
【leetcode】1106. Parsing A Boolean Expression
题目如下: Return the result of evaluating a given boolean expression, represented as a string. An expression can either be: "t", evaluating to True; "f", ...
分类:其他好文   时间:2019-07-05 17:55:16    阅读次数:99
LeetCode 549. Binary Tree Longest Consecutive Sequence II
Given a binary tree, you need to find the length of Longest Consecutive Path in Binary Tree. Especially, this path can be either increasing or decreas ...
分类:其他好文   时间:2019-06-26 22:05:41    阅读次数:150
Android主题更换换肤
知识总览android主题换肤通常借助LayoutInflater#setFactory实现换肤。 换肤步骤: 通过解析外部的apk压缩文件,创建自定义的Resource对象去访问apk压缩文件的资源。借助LayoutInfater#setFactoy,将步骤(1)中的资源应用到View的创建过程当 ...
分类:移动开发   时间:2019-06-22 18:20:53    阅读次数:159
关于MySql升级JDBC架包导致时区问题报错(The server time zone value '?й???????' is unrecognized or represents more than one time zone)
报错信息: The server time zone value '?й???????' is unrecognized or represents more than one time zone. You must configure either the server or JDBC drive ...
分类:数据库   时间:2019-06-22 10:50:39    阅读次数:159
django improperly configured
ImproperlyConfigured: You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings DJ ...
分类:其他好文   时间:2019-06-14 22:21:20    阅读次数:123
falsk 请求没有返回值报错
线上报警 5xx 错误,查看日志发现报这个错, TypeError: The view function did not return a valid response. The function either returned None or ended without a return stat ...
分类:其他好文   时间:2019-06-12 17:58:34    阅读次数:689
字典操作
一、字典基础 1、创建字典 一个字典通过一对大括号进行创建,键值之间使用(:)进行分隔,每一对键值之间使用(,)分隔,如果大括号中无值那么就是空字典;它是Python中唯一具有映射关系的数据类型,效率高于列表。 当然如果键值不唯一,也不会抛出异常,只不过相同的键会被覆盖掉。 2、dict函数 可以使 ...
分类:其他好文   时间:2019-06-11 19:00:52    阅读次数:105
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