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Which is more preferable to use: lambda functions or nested functions ('def')?
...tic sugar for an assignment, so the result is the same, and they are a lot more flexible and readable.
lambdas can be used for use once, throw away functions which won't have a name.
However, this use case is very rare. You rarely need to pass around unnamed function objects.
The builtins map() a...
Java 8 Iterable.forEach() vs foreach loop
...ode.
If you do need parallelism, it is probably much faster and not much more difficult to use an ExecutorService. Streams are both automagical (read: don't know much about your problem) and use a specialized (read: inefficient for the general case) parallelization strategy (fork-join recursive de...
CSS: Truncate table cells, but fit as much as possible
...text-overflow:ellipsis; overflow: hidden; max-width:1px;">This cell has more content.This cell has more content.This cell has more content.This cell has more content.This cell has more content.This cell has more content.</td>
<td style="white-space: nowrap;">Less content here....
What's the difference between the data structure Tree and Graph?
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Is Disney's FastPass Valid and/or Useful Queue Theory
... and rides are the resources.
Like I said, you aren't going to create any more total throughput for said ride, but there may be rides being underutilized elsewhere. If you are now able to ride these rides as well as the rides you have to wait on, then you can increase the overall efficiency of the ...
Proper way to declare custom exceptions in modern Python?
... with e.errors
Python 3 Update: In Python 3+, you can use this slightly more compact use of super():
class ValidationError(Exception):
def __init__(self, message, errors):
# Call the base class constructor with the parameters it needs
super().__init__(message)
# Now...
Standard alternative to GCC's ##__VA_ARGS__ trick?
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I'm afraid I don't have a proof, nor am I anymore the right person to try to think one up. I did write half of GCC's preprocessor, but that was more than ten years ago, and I'd never have thought of the argument-counting trick below, even then.
– z...
Why is there no Constant feature in Java?
... final in Java seems to work like C++ const for value types, but more like a C++ non-const T& for reference types
– Mark K Cowan
Aug 18 '16 at 11:28
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INNER JOIN ON vs WHERE clause
...NNER JOIN is ANSI syntax which you should use.
It is generally considered more readable, especially when you join lots of tables.
It can also be easily replaced with an OUTER JOIN whenever a need arises.
The WHERE syntax is more relational model oriented.
A result of two tables JOINed is a carte...
Counting the number of elements with the values of x in a vector
...> a[names(a)==435]
435
3
Or convert it into a data.frame if you're more comfortable working with that:
> as.data.frame(table(numbers))
numbers Freq
1 4 2
2 5 1
3 23 2
4 34 2
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