大约有 667 项符合查询结果（耗时：0.0090秒） [XML]
Python creating a dictionary of lists
... choice. setdefault is still useful in older versions of Python (prior to 2.5).
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How can I make SQL case sensitive string comparison on MySQL?
...took a deeper look, made the change Nitesh recommended and query went from 2.5 seconds to 0.15 seconds. It was not using the index when Binary was before Where. After moving Binary to after Where the index was used. Thank you!
– michaelf
Sep 20 at 12:33
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How can I represent an 'Enum' in Python?
...ribed in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi.
For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2).
To use enum3...
Can Python test the membership of multiple values in a list?
...set before using the subset test approach. Then the speedup drops to about 2.5x:
>>> %timeit bigset >= set(bigsubseq)
2.1 ms ± 49.2 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
And if your container is a sequence, and needs to be converted first, then the speedup is eve...
Elegant Python function to convert CamelCase to snake_case?
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For accepted answer 6.81 µs ± 22.5 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each) but for this response 2.51 µs ± 25.5 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each) which is 2.5x times faster! Love this!
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Role/Purpose of ContextLoaderListener in Spring?
...a.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID"
version="2.5">
<display-name>Some Minimal Webapp</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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Since Ruby 2.5 Hash#slice is in the standard library. ruby-doc.org/core-2.5.0/Hash.html#method-i-slice Yay!
– Madis Nõmme
Nov 12 '19 at 15:03
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Retrieve version from maven pom.xml in code
...ent looks like:
#Generated by Maven
#Sun Feb 21 23:38:24 GMT 2010
version=2.5
groupId=commons-lang
artifactId=commons-lang
Many applications use this file to read the application/jar version at runtime, there is zero setup required.
The only problem with the above approach is that this file is (...
Interview question: Check if one string is a rotation of other string [closed]
...s wrong. For Python 2.4 and earlier my answer was correct but since Python 2.5 s1 in s2 is optimised. See effbot.org/zone/stringlib.htm for the description of the algorithm. Google seems to indicate that Java doesn't have fast string searching (see johannburkard.de/software/stringsearch for example)...
Difference between double and single curly brace in angular JS?
...ere, too, nothing different:
<div ng-init="distanceWalked = {mon:2, tue:2.5, wed:0.8, thu:3, fri:1.5,
sat:2, sun:3}">
With some directives like ngClass or ngStyle that accept map:
<span ng-style="{'color' : 'red'}">{{viruses.length}} viruses found!</span>
<div ng-class="{'gre...