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Printing hexadecimal characters in C
... Maybe I can help. This is (technically) undefined behavior because specifier x requires an unsigned type, but ch is promoted to int. The correct code would simply cast ch to unsigned, or use a cast to unsigned char and the specifier: hhx.
– 2501
Apr 28 '16 ...
Why is === faster than == in PHP?
...uality operator == coerces, or converts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less work is done, which makes it faster.
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How can I get dict from sqlite query?
...r follow the advice that's given right after this example in the docs:
If returning a tuple doesn’t suffice
and you want name-based access to
columns, you should consider setting
row_factory to the highly-optimized
sqlite3.Row type. Row provides both
index-based and case-insensitive
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Create PostgreSQL ROLE (user) if it doesn't exist
...QL script to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answers
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Apache POI Excel - how to configure columns to be expanded?
...o point out that autoSizeColumn does not scale well and will be super slow if you have lots of rows. I had to get a little hacky and do something similar to what was suggested in this question.
– lbstr
Apr 17 '14 at 20:17
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How do I determine k when using k-means clustering?
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Great answer! For X-Means, do you know if overall BIC score n := k*2 (k clusters, each cluster modeled by Gaussian with mean/variance parameters). Also if you determine the "parent" BIC > "2 children" BIC would you ever split that cluster again in the next ite...
How do I convert from int to Long in Java?
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Note that there is a difference between a cast to long and a cast to Long. If you cast to long (a primitive value) then it should be automatically boxed to a Long (the reference type that wraps it).
You could alternatively use new to create an in...
How to convert numbers between hexadecimal and decimal
... @ColeJohnson int.Parse doesn't have an option for you to specify the base as an int, just as one of a few valid NumberStyles. For base 16, either is just fine, but as a general solution, it's good to know how both work.
– Tim S.
Oct 21 '13 at 20:4...
What is the difference between JVM, JDK, JRE & OpenJDK?
What is the difference between JVM , JDK , JRE & OpenJDK ?
19 Answers
19
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Convert a list of characters into a string
If I have a list of chars:
9 Answers
9
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