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如何连谷歌地图？连其它地图也行 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...我们平台即可直接使用哦谢谢回复！访问谷歌地图的网址是“http://maps.google.com/maps?saddr=纬度,经度&daddr=纬度,经度”，能不能写一个网址字串给我？谢谢！
我是前几天刚开始学App Inventor2的，一上手就选了这个难的。因为自己...
- AI 助手 - 清泛IT社区，为创新赋能！
补充调研：只判断文本框是否为空也报 "Infinity or NaN:Infinity"
以下为对话中 ai2claw 关于此问题的补充调研
用户提问：TextBox输入字符串后，只用"判断为空"积木块（string-empty?），也报错"Infinity or NaN:Infinity&quo...
How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?
... you need to install the cygwin package ca-certificates via Cygwin's setup.exe to get the certificates.
Do NOT use curl or similar hacks to download certificates (as a neighboring answer advices) because that's fundamentally insecure and may compromise the system.
Second, you need to tell wget wh...
How do you calculate log base 2 in Java for integers?
... x where (int)(Math.log(x)/Math.log(2)) fails (just because there are only 32 "dangerous" values), but it does not mean that it will work the same way on any PC.
The usual trick here is using "epsilon" when rounding. Like (int)(Math.log(x)/Math.log(2)+1e-10) should never fail. The choice of this "e...
How do I import .sql files into SQLite 3?
...ly, you can do this from a Windows commandline prompt/batch file:
sqlite3.exe DB.db ".read db.sql"
Where DB.db is the database file, and db.sql is the SQL file to run/import.
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What is better, adjacency lists or adjacency matrices for graph problems in C++?
...ry).
An adjacency list occupies 8e space, where e is the number of edges (32bit computer).
If we define the density of the graph as d = e/n2 (number of edges divided by the maximum number of edges), we can find the "breakpoint" where a list takes up more memory than a matrix:
8e > n2/8 whe...
Visual studio long compilation when replacing int with double
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I repro, 27 seconds on my machine. The evil-doer is MsMpEng.exe, it burns 100% core for that long. Easy to see in Task Manager's Processes tab.
This is the Windows Defender service, the one that actually performs the malware scans. Disabling it by unticking the "Turn on real-time p...
How to visualize an XML schema? [closed]
...ects/xsdvi/
It can be run as follows (assuming Java is installed and java.exe is in the path):-
Go to the dist/lib folder.
Run the following command java -jar xsdvi.jar <input1.xsd> [<input2.xsd> [<input3.xsd> ...]] [style]
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Git for Windows: .bashrc or equivalent configuration files for Git Bash shell
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To create the .bashrc file you can execute the following from DOS prompt: copy > .bashrc. It creates the file with "The syntax of the command is incorrect." but you can edit it now.
– tmorell
May 26 '13 at 15:49
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“#include” a text file in a C program as a char[]
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answered Jul 29 '14 at 17:32
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