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How do I create a SHA1 hash in ruby?
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There's also Digest::SHA1.base64digest 'foo'
– andrewrk
Jan 14 '12 at 1:31
14
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What's the valid way to include an image with no src?
...ogramming.com/2009/03/15/the-tiniest-gif-ever
<img src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=" width="0" height="0" alt="" />
Edit based on comment below:
Of course, you must consider your browser support requirements. No support for IE7 or less is notable. http://cani...
Java Byte Array to String to Byte Array
...he bytes as raw data (as binary) instead of a string, or perhaps even as a Base64 string, which would only require you to convert it back as a base 256 (binary) value.
– Yanick Rochon
Feb 4 '13 at 17:06
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Python Pandas: Get index of rows which column matches certain value
...] returns the ith row of df. i does not refer to the index label, i is a 0-based index.
In contrast, the attribute index returns actual index labels, not numeric row-indices:
df.index[df['BoolCol'] == True].tolist()
or equivalently,
df.index[df['BoolCol']].tolist()
You can see the difference ...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...一个实用性较强的健康类软件或对“健身宝”进行进一步拓展以实现一个具有完整功能的健身宝程序。【参考资源】【参一】微数据库
微数据库（TinyDB）是一个非可视组件，用来保存程序中的数据。
用App Inventor创建...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to save/restore serializable object to/from file?
...an hold in memory, you might want to switch to an object store (object database) instead of a file.
– Tezra
Jun 15 '17 at 17:39
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Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...developer's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...developer's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...developer's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may...