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Keep only first n characters in a string?
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Mike ChristensenMike Christensen
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CSV file written with Python has blank lines between each row
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John MachinJohn Machin
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How to go back to lines edited before the last one in Vim?
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I use CTRL-O and CTRL-I to jump back and forth between recent points in files. It also goes thr...
How do I call the default deserializer from a custom deserializer in Jackson
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GiliGili
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APP INVENTOR硬件交互学习教程08——增加语音播报 - 创客硬件开发 - 清泛IT...
这一节介绍增加语音播报功能，需要增加一个复选框和一个文本朗读器组件。
1.界面设计
2.程序设计
断电模式可以保存，复选框配置模式
APP INVENTOR硬件交互学习教程09——增加人机交互提示 - 创客硬件开发 - 清...
...互提示；蓝牙未开启情况下，打开APP会有提示弹窗，应用程序正在开启蓝牙，是否允许
蓝牙未连接情况下，发送命令给下位机提示弹窗，请先连接蓝牙
1.界面设计
增加activity 活动控件和对话框控件
2.逻辑设计
屏幕初...
Regex to replace everything except numbers and a decimal point
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ChanduChandu
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
... the thread library) is open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf
– Anthony Williams
Aug 30 '11 at 11:20
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Unicode character in PHP string
...on.
ASCII example:
<?php
echo("\x48\x65\x6C\x6C\x6F\x20\x57\x6F\x72\x6C\x64\x21");
?>
Hello World!
So for your case, all you need to do is $str = "\x30\xA2";. But these are bytes, not characters. The byte representation of the Unicode codepoint coincides with UTF-16 big endian, s...
Getting image dimensions without reading the entire file
...be 0 and specified later in a 0xDC block. See w3.org/Graphics/JPEG/itu-t81.pdf
– Vilx-
Feb 22 '11 at 12:36
Tweaked the...