大约有 4,200 项符合查询结果（耗时：0.0189秒） [XML]
Pairs from single list
... is an example of creating pairs/legs by using a generator. Generators are free from stack limits
def pairwise(data):
zip(data[::2], data[1::2])
Example:
print(list(pairwise(range(10))))
Output:
[(0, 1), (2, 3), (4, 5), (6, 7), (8, 9)]
...
Delegates: Predicate vs. Action vs. Func
...
Func is more LINQ friendly, can be passed in as a parameter. (point-free)
Predicate cannot, has to be wrapped again.
Predicate<int> IsPositivePred = i => i > 0;
Func<int,bool> IsPositiveFunc = i => i > 0;
new []{2,-4}.Where(i=>IsPositivePred(i)); //Wrap again
ne...
The 3 different equals
...re choosing === for performance reasons, they're wrong. So programmers are free to choose === or == based on logical reasons but not on performance reasons: there are different cases to prefer the one or the other and performance must not be taken into account at all.
– lucafer...
How to remove all characters after a specific character in python?
... solution (no real difference for the non-RE solution). Some generality is free, some isn't...;-)
– Alex Martelli
May 24 '09 at 22:56
...
Beginner's guide to ElasticSearch [closed]
...roblems in search and how to solve them.
Best of all, the book is OSS and free (unless you want to buy a paper copy, in which case O'Reilly will happily sell you one :) )
Edit (August 2013):
Many of my articles have been migrated over to the official Elasticsearch blog, as well as new articles t...
Java code for getting current time [duplicate]
... Java 6 & 7 and to Android.
Joda-TimeThird-party library, open-source, free-of-cost.
java.time
ZonedDateTime zdt = ZonedDateTime.now();
If needed for old code, convert to java.util.Date. Go through at Instant which is a moment on the timeline in UTC.
java.util.Date date = java.util.Date.fr...
compareTo() vs. equals()
...ace.(compareTo() is a method fo the comparable Interface). So any class is free to implement the Comparable interface.
But compareTo() gives the ordering of objects, used typically in sorting objects in ascending or descending order while equals() will only talk about the equality and say whether ...
Graphical DIFF programs for linux [closed]
...
BeyondCompare has also just been released in a Linux version.
Not free, but the Windows version is worth every penny - I'm assuming the Linux version is the same.
share
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improve this answe...
Why doesn't “System.out.println” work in Android?
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@JosephEarl - Feel free to use the Edit button.
– Dave Webb
Nov 29 '12 at 11:39
10
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What's the best way to learn LISP? [closed]
...d Lamkins's Successful Lisp. Successful Lisp is also available online for free.
After than, look at Lisp in Small Pieces by Queinnec, and Norvig's Lisp in AI book.
Marty Hall has a nice list at Johns Hopkins.
Updated: I don't mean stick to it forever, just that trying to learn both at once would...