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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
...应16进制：C4 E3 BA C3。而AI2中文字符串默认是UTF-8编码的（E4 BD A0 E5 A5 BD ）。
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When & why to use delegates? [duplicate]
...e it tons more manageable. Great mechanism to use in conjunction with unit testing if most of your methods have the same signature pattern
– Eon
Jul 11 '14 at 11:22
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What is the easiest way to disable/enable buttons and links (jQuery + Bootstrap)
... It goes against the specification and wouldn't pass validation tests. If you want a custom disabled property you can make use of data-* attributes. As Bootstrap already applies the same disabled property styles to class="disabled" you may as well rely on the class instead.
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Fast check for NaN in NumPy
I'm looking for the fastest way to check for the occurrence of NaN ( np.nan ) in a NumPy array X . np.isnan(X) is out of the question, since it builds a boolean array of shape X.shape , which is potentially gigantic.
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生活手记：参考小红书的原生应用案例 · App Inventor 2 中文网
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技能
e08af0775c8b4dcefc0585daae7ecfe9bf561cf051381e4d390ba8d865ae0ec6
7 项通过
助手同源
b5df91496aeba86e3a31408b420008df77cd7250fd6f9fd2a44c31382de102e0
7 项通过
🧩 原生实现与数据
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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Perfect! I tested it with 10 chars as length. 100000 tokens and still no duplicates!
– Sharpless512
Feb 26 '14 at 8:13
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Is there a macro recorder for Eclipse? [closed]
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We have 'Eclipse Macro' >> wiki.eclipse.org/E4/Macros
– Anver Sadhat
Jan 9 '19 at 12:26
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Random strings in Python
...rk for you:
>>> import uuid
>>> print uuid.uuid4()
58fe9784-f60a-42bc-aa94-eb8f1a7e5c17
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Converting datetime.date to UTC timestamp in Python
...ted that this ignores timezone information even for offset-aware datetime (tested for Python 2.7).
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How to check if PHP array is associative or sequential?
...; '3' ); One potential work around is running ksort($arr) before doing the test
– Scott
Jun 5 '13 at 21:58
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