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String concatenation vs. string substitution in Python

...catenation is (significantly) faster according to my machine. But stylistically, I'm willing to pay the price of substitution if performance is not critical. Well, and if I need formatting, there's no need to even ask the question... there's no option but to use interpolation/templating. >>&g...
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Margin-Top not working for span element?

...Unlike div, p 1 which are Block Level elements which can take up margin on all sides,span2 cannot as it's an Inline element which takes up margins horizontally only. From the specification: Margin properties specify the width of the margin area of a box. The 'margin' shorthand property sets t...
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Use of 'use utf8;' gives me 'Wide character in print'

...t three bytes make up your character, the last one is the line-feed. The call to print sends these four characters to STDOUT. Your console then works out how to display these characters. If your console is set to use UTF8, then it will interpret those three bytes as your single character and that i...
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Disable/turn off inherited CSS3 transitions

...out transitions. Edited to note that @Frédéric Hamidi's answer, using all (for Opera, at least) is far more concise than listing out each individual property-name that you don't want to have transition. Updated JS Fiddle demo, showing the use of all in Opera: -o-transition: all 0 none, followi...
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TypeError: got multiple values for argument

...r and it seems that my problem has an interesting distinct difference than all the posts I read so far, namely, all the other posts so far have the error in regards to either a user created class or a builtin system resource. I am experiencing this problem when calling a function, I can't figure out...
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JSON: why are forward slashes escaped?

... JSON doesn't require you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out. Some of ...
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Design patterns or best practices for shell scripts [closed]

...first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous. That said, I don't have other resources to pass you but my personal experience. Here is what I normally do, which is overkill, but tends to be solid, although...
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Convert base-2 binary number string to int

... (as suggested by the >>> prompt), you don't need to use print at all. The OP's hypothetical example didn't. So it really should be identical in Python 2 and 3. – John Y Jul 12 '16 at 22:36 ...
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jQuery posting valid json in request body

...query string when sending requests, but setting processData:false should allow me to send actual JSON in the body. Unfortunately I'm having a hard time determining first, if this is happening and 2nd what the object looks like that is being sent to the server. All I know is that the server is no...
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Disable button in jQuery

... Here is a small fiddle I created. Please let me what I'm doing wrong. jsfiddle.net/2Nfu4/3 – user2047817 Feb 28 '13 at 17:48 ...