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What are the differences between Rust's `String` and `str`?
... the str takes up cannot be known at compile time and depends on runtime information — it cannot be stored in a variable because the compiler needs to know at compile time what the size of each variable is. A str is conceptually just a row of u8 bytes with the guarantee that it forms valid UTF-8. ...
Regular expression for first and last name
...Lithuanian and Latvian characters. Rather try to find a library which transforms the exotic characters into the proper accent-less version, then write the /^[a-z ,.'-]+$/i regexp.
– gaborsch
Mar 2 '13 at 16:53
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Control the size of points in an R scatterplot?
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When to use reinterpret_cast?
...ng (7.0.0) and gcc (8.2.0). Unfortunately I did not find the limitation in formal language. All I could find was social.msdn.microsoft.com/Forums/vstudio/en-US/…
– Michael Veksler
Mar 2 '19 at 16:03
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Ruby: kind_of? vs. instance_of? vs. is_a?
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Yes, they're the same. Duck typing is a form of polymorphism.
– SpaceGhost
Jan 15 '13 at 21:54
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Call a function with argument list in python
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If the latter is what you want, use the *args form when wrapper calls func2, but not in 'def wrapper'.
– Alex Martelli
May 3 '09 at 19:21
add a co...
Postgres and Indexes on Foreign Keys and Primary Keys
...ed. Each index you add slows DML operations down slightly, so you pay a performance cost on every INSERT, UPDATE or DELETE. If the index is rarely used it may not be worth having.
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Is there something like Annotation Inheritance in java?
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How to compute the similarity between two text documents?
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The common way of doing this is to transform the documents into TF-IDF vectors and then compute the cosine similarity between them. Any textbook on information retrieval (IR) covers this. See esp. Introduction to Information Retrieval, which is free and available o...
How to see which flags -march=native will activate?
...his is suboptimal. The output of --help=target doesn't display CPU cache information, of which the methods both elias and 42n4 below have listed. Specifically, on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512
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