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What is the most efficient string concatenation method in python?

... Guido. Although it is worth remembering also that this is an old article and it predates the existence of things like ''.join (although I guess string.joinfields is more-or-less the same) On the strength of that, the array module may be fastest if you can shoehorn your problem into it. But ''.jo...
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What do the different readystates in XMLHttpRequest mean, and how can I use them?

XMLHttpRequest has 5 readyState s, and I only use 1 of them (the last one, 4 ). 5 Answers ...
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The imported project “C:\Microsoft.CSharp.targets” was not found

... <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> and change it to <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" /> share | improve this answer ...
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Eclipse error: 'Failed to create the Java Virtual Machine'

... This will only work if the problem was not enough memory and if you lower the values in eclipse.ini. Raising them will only make this issue more probable to occur. – Stijn de Witt Feb 18 '13 at 14:17 ...
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How to create Gmail filter searching for text only at start of subject line?

... Regex is not on the list of search features, and it was on (more or less, as Better message search functionality (i.e. Wildcard and partial word search)) the list of pre-canned feature requests, so the answer is "you cannot do this via the Gmail web UI" :-( There are ...
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HTML anchor link - href and onclick both?

I want to author an anchor tag that executes some JavaScript and then proceeds to go wherever the href was taking it. Invoking a function that executes my JavaScript and then sets window.location or top.location to the href location doesn't work for me. ...
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How to tell whether a point is to the right or left side of a line

...o separate them into 2 distinct sets. To do this, I choose two points ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set. ...
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Multiple inheritance/prototypes in JavaScript

... false, })); } Explanation A proxy object consists of a target object and some traps, which define custom behavior for fundamental operations. When creating an object which inherits from another one, we use Object.create(obj). But in this case we want multiple inheritance, so instead of obj I ...
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What is the purpose of the reader monad?

The reader monad is so complex and seems to be useless. In an imperative language like Java or C++, there is no equivalent concept for the reader monad, if I am not mistaken. ...
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How to create a new java.io.File in memory?

...tion then, is “it’s not possible”. This answer tries to be pragmatic and tell what the user could do instead. Andreas’ answer is clearly more thorough and a better (attempt at an) answer. – haraldK Jan 17 at 12:11 ...