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Sorting Python list based on the length of the string
...ey parameter:
xs.sort(key=lambda s: len(s))
This tells the sort method to order based on whatever the key function returns.
EDIT: Thanks to balpha and Ruslan below for pointing out that you can just pass len directly as the key parameter to the function, thus eliminating the need for a lambda:
xs.s...
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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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...
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...
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...
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...
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...
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...
Data Modeling with Kafka? Topics and Partitions
...
@RavindranathAkila Kafka is designed to have of the order of few thousands of partitions roughly less than 10,000. And the main bottleneck is zookeeper. A better way to design such a system is to have fewer partitions and use keyed messages to distribute the data over a fixed ...