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How to initialize an array's length in JavaScript?
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Why do you want to initialize the length? Theoretically there is no need for this. It can even result in confusing behavior, because all tests that use the length to find out whether an array is empty or not will report that the array is not empty.
Some tests show that settin...
Difference between scaling horizontally and vertically for databases [closed]
...ses and scalability is one of them. What is the difference between horizontally and vertically scaling these databases?
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(Built-in) way in JavaScript to check if a string is a valid number
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A very important note about parseInt is that it will allow you to specify a radix for converting the string to an int. This is a big gotcha as it tries to guess a radix for you if you don't supply it. So, for example: parseInt("17") results in 17 (decimal, 10), but parseInt("...
How do you build a Singleton in Dart?
... There's the weird syntax Singleton._internal(); that looks like a method call when it's really a constructor definition. There's the _internal name. And there's the nifty language design point that Dart lets you start out (dart out?) using an ordinary constructor and then, if needed, change it to a...
How to prevent SIGPIPEs (or handle them properly)
I have a small server program that accepts connections on a TCP or local UNIX socket, reads a simple command and, depending on the command, sends a reply. The problem is that the client may have no interest in the answer sometimes and exits early, so writing to that socket will cause a SIGPIPE and m...
Running Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on the same machine
..., but you'll thank yourself in the long run. In my experience, you can't really get them cleanly installed side by side and unless they are standalone installs you can't really verify that it is 100% true-to-browser rendering.
Update: Looks like one of the better ways to accomplish this (if running...
How to manually set an authenticated user in Spring Security / SpringMVC
After a new user submits a 'New account' form, I want to manually log that user in so they don't have to login on the subsequent page.
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How do I tokenize a string in C++?
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C++ standard library algorithms are pretty universally based around iterators rather than concrete containers. Unfortunately this makes it hard to provide a Java-like split function in the C++ standard library, even though nobody argues that this would be convenient. But wha...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...time up-front to compile, so it won't be efficient if your input is very small or your search pattern changes frequently).
Below is a full example, based on a list of tokens taken from a map. (Uses StringUtils from Apache Commons Lang).
Map<String,String> tokens = new HashMap<String,Strin...
Test if characters are in a string
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@Josh O'brien, that post compared finding (counting) all the matches in a single long string, try finding 1 match in a bunch of shorter strings: vec <- replicate(100000, paste( sample(letters, 10, replace=TRUE), collapse='') ).
– Greg Snow
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