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Java compile speed vs Scala compile speed
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The Scala compiler is more sophisticated than Java's, providing type inference, implicit conversion, and a much more powerful type system. These features don't come for free, so I wouldn't expect scalac to ever be as fast as javac. This reflects...
How to check whether a string is Base64 encoded or not
...th '=' characters.
^([A-Za-z0-9+/]{4})* means the string starts with 0 or more base64 groups.
([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$ means the string ends in one of three forms: [A-Za-z0-9+/]{4}, [A-Za-z0-9+/]{3}= or [A-Za-z0-9+/]{2}==.
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More lines in command window
Is there a possibility to get "more" lines into the command window (Console)?
3 Answers
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Surrogate vs. natural/business keys [closed]
...al about a primary key, except that it is labelled as such. It is nothing more than a NOT NULL UNIQUE constraint, and a table can have more than one.
If you use a surrogate key, you still want a business key to ensure uniqueness according to the business rules.
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Renaming the current file in Vim
... @AaronMahan I've fixed Rename2.vim (disregarding the smarter but more complex DelvarWorld version) to allow for spaces in paths and forked it here: github.com/aehlke/vim-rename3 Feel free to submit pull requests for even smarter functionality!
– aehlke
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MySQL: multiple tables or one table with many columns?
So this is more of a design question.
8 Answers
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XmlSerializer giving FileNotFoundException at constructor
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I think Hans' suggestion below is more valuable - use a different method call that does not produce this exception at all: XmlSerializer serializer = XmlSerializer.FromTypes(new[] { typeof(MyType) })[0];
– bright
Jun 9 '...
Peak memory usage of a linux/unix process
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"VmHWM: Peak resident set size" might be more usable to measure RAM usage (instead of VmPeak that includes a lot of other things too).
– jfs
Feb 26 '19 at 6:29
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How can I split a JavaScript string by white space or comma?
...put.split(/[ ,]+/);
This particular regex splits on a sequence of one or more commas or spaces, so that e.g. multiple consecutive spaces or a comma+space sequence do not produce empty elements in the results.
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Generate a Hash from string in Javascript
...n jsperf (jsperf.com/hashing-strings) and the bitwise function is actually more slow than the number based function.
– skerit
Jun 29 '12 at 21:23
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