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How can I read a large text file line by line using Java?
...les.lines(Paths.get(filename), Charset.defaultCharset())) {
lines.forEachOrdered(line -> process(line));
}
Printing all the lines in the file:
try (Stream<String> lines = Files.lines(file, Charset.defaultCharset())) {
lines.forEachOrdered(System.out::println);
}
...
Regular Expressions: Is there an AND operator?
...or, it isn't necessary that it be in a lookahead, but it doesn't hurt.
In order to match a whole paragraph, you need to anchor the regex at both ends and add a final .* to consume the remaining characters. Using Perl-style notation, that would be:
/^(?=.*word1)(?=.*word2)(?=.*word3).*$/m
The 'm...
Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
...iled with last error = 6
You will need to perform the following steps in order:
Copy the dll to another directory
Rebase the copy using the commands above
Replace the original dll with the copy.
If any issue run the commands as Administrator
...
ExpressJS How to structure an application?
...don't need it. It is in lots of boilerplate due to mindless copypasta.
THE ORDER OF MIDDLEWARE AND ROUTES IN EXPRESS MATTERS!!!
Almost every routing problem I see on stackoverflow is out-of-order express middleware
In general, you want your routes decoupled and not relying on order that much
Don't...
Select row with most recent date per user
...e t2
WHERE t2.user = t1.user
ORDER BY t2.id DESC
LIMIT 1)
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What is the advantage of using heredoc in PHP? [closed]
...queries:
$sql = <<<SQL
select *
from $tablename
where id in [$order_ids_list]
and product_name = "widgets"
SQL;
To me this has a lower probability of introducing a syntax error than using quotes:
$sql = "
select *
from $tablename
where id in [$order_ids_list]
and product_nam...
Undefined reference to `sin` [duplicate]
...e POSIX standard to provide their software on "POSIX compliant systems" in order to reach more platforms.
UNIX customers demanded "POSIX compliant" UNIX systems to run the software.
The pressures that fed into the decision to put -lm in a different library probably included, but are not limited to...
How can I get the max (or min) value in a vector?
...1, 2, 3, -1, -2, -3};
If the vector is sorted in ascending or descending order then you can find it with complexity O(1).
For a vector of ascending order the first element is the smallest element, you can get it by v[0] (0 based indexing) and last element is the largest element, you can get it b...
Selecting/excluding sets of columns in pandas [duplicate]
...-based method, so duplicate column names will cause issues, and the column order may be changed.
Advantage over drop: you don't create a copy of the entire dataframe when you only need the list of columns. For instance, in order to drop duplicates on a subset of columns:
# may create a copy of t...
Drop all tables whose names begin with a certain string
...My solution below avoids this and deletes tables in foreign key dependency order.
– Tony O'Hagan
Jul 19 '15 at 1:15
Th...