Compiler & Interpreter

动态代码编译及执行

C# JavaScript Octave/Matlab

字符转换

大小写转换|平片假名转换|简繁转换

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单位转换

Convert between units (metric, imperial, us).

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Base64

Convert an image file to Base64 encoding for HTML embedding.

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QR Code

QR code encode / decode

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IP

Get geographic info for IP

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Check residential ID

Validate resident ID and parse ID information.

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