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how to concatenate two dictionaries to create a new one in Python? [duplicate]

... Slowest and doesn't work in Python3: concatenate the items and call dict on the resulting list: $ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \ 'd4 = dict(d1.items() + d2.items() + d3.items())' 100000 loops, bes...
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WAMP 403 Forbidden message on Windows 7

... me too. Though in my case I had to first "Put offline", then "Put online" and worked without any other changes to my config files! Thank you!! – Osmar Apr 18 '16 at 3:59 1 ...
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How to get function parameter names/values dynamically?

...ttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope/arguments: The arguments object is not an Array. It is similar to an Array, but does not have any Array properties except length. For example, it does not have the pop method. However it can be converted t...
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Android adb “Unable to open sync connection!”

I can run and debug my Android app on my phone just fine, most of the time. Then, seemingly randomly, when I try to run or debug my app from Eclipse, the Console in Eclipse says: ...
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HTML 5 Favicon - Support?

... link only answers so I thought I would summarize the links into an answer and what I will be using. When working to create Cross Browser Favicons (including touch icons) there are several things to consider. The first (of course) is Internet Explorer. IE does not support PNG favicons until versi...
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Is there a regular expression to detect a valid regular expression?

...group start (?: (?:[^?+*{}()[\]\\|]+ # literals and ^, $ | \\. # escaped characters | \[ (?: \^?\\. | \^[^\\] | [^\\^] ) # character classes (?: [^\]\\]+ | \\. )* \] | \( (?:\?[:=!]|\?<[=!]|\?>)? (?1)?? ...
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How do arrays in C# partially implement IList?

...tation is somewhat more complicated than we might think. Both the compiler and the CLR try very hard to give the impression that an array type implements IList<T> - but array variance makes this trickier. Contrary to the answer from Hans, the array types (single-dimensional, zero-based anyway)...
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How do you make sure email you send programmatically is not automatically marked as spam?

This is a tricky one and I've always relied on techniques, such as permission-based emails (i.e. only sending to people you have permission to send to) and not using blatantly spamish terminology. ...
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How to sort objects by multiple keys in Python?

... u'Utley, Alex', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Russo, Brandon', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Chappell, Justin', u'Total_Points': 96.0}, {u'TOT_PTS_Misc': u'Foster, Toney', u'Total_Points': 80.0}, {u'TOT_PTS_Misc': u'Lawson, Roman', u'Total_Points': 80...
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When should I use perror(“…”) and fprintf(stderr, “…”)?

Reading the man pages and some code did not really help me in understanding the difference between - or better, when I should use - perror("...") or fprintf(stderr, "...") . ...