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Why is string concatenation faster than array join?

...it isn’t a major inconvenience to your current users. Odds are there are more important things to worry about than concatenation performance when dealing with old browsers. – Thomas Higginbotham May 24 '16 at 14:04 ...
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Eventual consistency in plain English

... away thinking it is going to be sunny, even though she asked after one or more of the servers (you and me) had a more up-to-date value. As opposed to Strict Consistency / ACID compliance: Your bank balance is $50. You deposit $100. Your bank balance, queried from any ATM anywhere, is $150. Your ...
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How to Sort Multi-dimensional Array by Value?

...e array has been sorted. The function here is very short, it might be much more complicated if you wouldn't be comparing integers. – Christian Studer Feb 13 '12 at 10:40 62 ...
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What is the largest Safe UDP Packet Size on the Internet

...t said; having less fragments makes delivery "safer" because if there were more than one and any one of those never made it - the whole packet (datagram) is dropped by UDP. – markmnl Jan 5 '13 at 9:28 ...
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How can I dynamically create derived classes from a base class

...le names, known at coding time, or data - and names learned in runtime are more "data" than "variables" - So, you could just add your classes to a dictionary and use them from there: name = "SpecialClass" classes = {} classes[name] = ClassFactory(name, params) instance = classes[name](...) And ...
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Factors in R: more than an annoyance?

...ng, merging and generally manipulating the data, factors are a total pain. More recently, as in the past few years a lot of the functions have improved to handle the factors better. For instance, rbind plays nicely with them. I still find it a total nuisance to have left over empty levels after a su...
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How do I ignore an error on 'git pull' about my local changes would be overwritten by merge?

...tash them: git stash push --include-untracked If you don't need them anymore, you now can drop that stash: git stash drop If you don't want to stash changes that you already staged - e.g. with git add - then add the option --keep-index. Note however, that this will still prevent merging if tho...
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How to use a keypress event in AngularJS?

I want to catch the enter key press event on the textbox below. To make it more clear I am using a ng-repeat to populate the tbody. Here is the HTML: ...
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Why should I capitalize my SQL keywords? [duplicate]

Simple question. I personally find a string of lowercase characters to be more readable than a string of uppercase characters. Is some old/popular flavor of SQL case-sensitive or something? ...
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How to design a product table for many kinds of product where each product has many parameters

I do not have much experience in table design. My goal is to create one or more product tables that meet the requirements below: ...