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Why do I need 'b' to encode a string with Base64?
...s 8-bit binary byte data and encodes it uses only the characters A-Z, a-z, 0-9, +, /* so it can be transmitted over channels that do not preserve all 8-bits of data, such as email.
Hence, it wants a string of 8-bit bytes. You create those in Python 3 with the b'' syntax.
If you remove the b, it be...
How to generate a random string of a fixed length in Go?
...r) might be an acceptable compromise: they do improve performance by like 50% (see exact numbers in the II. Benchmark section), and they don't increase complexity significantly.
Having said that, even if you don't need the fastest solution, reading through this answer might be adventurous and educ...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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PostgreSQL - Rename database
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answered Sep 27 '08 at 15:03
bmdhacksbmdhacks
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Performance of FOR vs FOREACH in PHP
First of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and...
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How can I remove 3 characters at the end of a string in php?
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Just do:
echo substr($string, 0, -3);
You don't need to use a strlen call, since, as noted in the substr docs:
If length is given and is negative, then that many characters will be omitted from the end of string
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How to Copy Contents of One Canvas to Another Canvas Locally
...tion passing it the source canvas directly
destCtx.drawImage(sourceCanvas, 0, 0);
Way faster than using an ImageData object or Image element.
Note that sourceCanvas can be a HTMLImageElement, HTMLVideoElement, or a HTMLCanvasElement. As mentioned by Dave in a comment below this answer, you cannot...
How to return dictionary keys as a list in Python?
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1070
Try list(newdict.keys()).
This will convert the dict_keys object to a list.
On the other han...
Failed to Attach to Process ID Xcode
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answered Oct 10 '12 at 12:49
Robert ZahmRobert Zahm
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