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Why would I prefer using vector to deque
...to interact with a plain C library that needs contiguous arrays, or if you care (a lot) about spatial locality, then you might prefer vector. In addition, since there is some extra bookkeeping, other ops are probably (slightly) more expensive than their equivalent vector operations. On the other han...
Get keys from HashMap in Java
I have a Hashmap in Java like this:
14 Answers
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How would I run an async Task method synchronously?
I'm learning about async/await, and ran into a situation where I need to call an async method synchronously. How can I do that?
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Using Python String Formatting with Lists
I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...
How to insert a SQLite record with a datetime set to 'now' in Android application?
Say, we have a table created as:
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Does PostgreSQL support “accent insensitive” collations?
...n PostgreSQL
Among other things, it provides the function unaccent() you can use with your example (where LIKE seems not needed).
SELECT *
FROM users
WHERE unaccent(name) = unaccent('João');
Index
To use an index for that kind of query, create an index on the expression. However, Postgres ...
How to check if one of the following items is in a list?
I'm trying to find a short way to see if any of the following items is in a list, but my first attempt does not work. Besides writing a function to accomplish this, is the any short way to check if one of multiple items is in a list.
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How do you search for files containing DOS line endings (CRLF) with grep on Linux?
I want to search for files containing DOS line endings with grep on Linux. Something like this:
9 Answers
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
Is calculating an MD5 hash less CPU intensive than SHA-1 or SHA-2 on "standard" laptop x86 hardware? I'm interested in general information, not specific to a certain chip.
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Total size of the contents of all the files in a directory [closed]
When I use ls or du , I get the amount of disk space each file is occupying.
12 Answers
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