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Why do I need 'b' to encode a string with Base64?

...mail. 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 becomes a string. A string is a sequence of Unicode characters. base64 has no idea what to do with Unicode data, it's not 8-bit. It's not really any bits, in fact. :-) In your ...
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jQuery Multiple ID selectors

... 231 Try this: $("#upload_link,#upload_link2,#upload_link3").each(function(){ $(this).upload({ ...
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MySQL: Order by field size/length

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difference between scope and namespace of ruby-on-rails 3 routing

...ference is between a namespace and a scope in the routing of ruby-on-rails 3. 5 Answers ...
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What does a double * (splat) operator do

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How to output a comma delimited list in jinja python template?

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Maximum Length of Command Line String

...:08 Mofi 36.2k88 gold badges5353 silver badges101101 bronze badges answered Jul 8 '10 at 15:10 sunetossunetos ...
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JSR-303 @Valid annotation not working for list of child objects

... addresses member of UserAddressesForm with @Valid annotation. See section 3.1.3 and 3.5.1 of JSR 303: Bean Validation. As I explained in my answer to the question Is there a standard way to enable JSR 303 Bean Validation using annotated method, this is the real use of @Valid annotation as per JSR 3...
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Difference Between Invoke and DynamicInvoke

...alidated. For example: Func<int,int> twice = x => x * 2; int i = 3; int j = twice.Invoke(i); // or just: int j = twice(i); However! If you just know that it is Delegate, it has to resolve the parameters etc manually - this might involve unboxing, etc - a lot of reflection is going on. Fo...
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How do I retrieve the number of columns in a Pandas data frame?

... 312 Like so: import pandas as pd df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": ...