大约有 30,000 项符合查询结果（耗时：0.0232秒） [XML]
How do I find the duplicates in a list and create another list with them?
... [1, 2, 5]
Just in case speed matters, here are some timings:
# file: test.py
import collections
def thg435(l):
return [x for x, y in collections.Counter(l).items() if y > 1]
def moooeeeep(l):
seen = set()
seen_add = seen.add
# adds all elements it doesn't know yet to seen ...
How can you encode a string to Base64 in JavaScript?
...la.javascript.EcmaError: TypeError: Cannot find function replace in object teste teste teste I'm trying to encode .txt with "teste teste teste". Anyone knows why this error?
– PRVS
Nov 4 '15 at 9:19
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What Makes a Good Unit Test? [closed]
I'm sure most of you are writing lots of automated tests and that you also have run into some common pitfalls when unit testing.
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A more pretty/informative Var_dump alternative in PHP? [closed]
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You are looking for Krumo (Warning, Chrome alerts for Malware).
To put it simply, Krumo is a replacement for print_r() and var_dump(). By definition Krumo is a debugging tool (initially for PHP4/PHP5, now for PHP5 only), which displays structured information about...
mongo group query how to keep fields
...e first matching entries for each group, you can try aggregating like:
db.test.aggregate({
$group: {
_id : '$name',
name : { $first: '$name' },
age : { $first: '$age' },
sex : { $first: '$sex' },
province : { $first: '$province' },
city : { $first: '$city' },
area : { $first:...
Rspec doesn't see my model Class. uninitialized constant error
I'm writing tests on Rspec for my models in Ruby on Rails application.
And I receive this error while starting 'rspec spec'
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Unit testing private methods in C#
Visual Studio allows unit testing of private methods via an automatically generated accessor class. I have written a test of a private method that compiles successfully, but it fails at runtime. A fairly minimal version of the code and the test is:
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Fastest sort of fixed length 6 int array
...on ( this one ) I stumbled upon an interesting sub-problem. What is the fastest way to sort an array of 6 integers?
23 Answ...
Regex Named Groups in Java
...and Matching Strings with Balanced Parentheses slide)
Example:
String:
"TEST 123"
RegExp:
"(?<login>\\w+) (?<id>\\d+)"
Access
matcher.group(1) ==> TEST
matcher.group("login") ==> TEST
matcher.name(1) ==> login
Replace
matcher.replaceAll("aaaaa_$1_sssss_$2____") ==>...
Mock vs MagicMock
...ault implementations of most of the magic methods.".
If you don't need to test any magic methods, Mock is adequate and doesn't bring a lot of extraneous things into your tests. If you need to test a lot of magic methods MagicMock will save you some time.
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