大约有 15,700 项符合查询结果（耗时：0.0275秒） [XML]
Why use pip over easy_install? [closed]
...uperseded by distutils2 (which will also be in the Python standard library starting with 3.3). A basic installer named pysetup is provided as part or distutils2, and pip will continue to provide additional features on top of distutils2 in the future.
– Éric Araujo
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What is the difference between Cloud, Grid and Cluster? [closed]
...r goes down the service fails over to the other node and almost seamlessly starts running there. Active-Passive is similar, but only one machine runs these services and only takes over once there's a failure.
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Calling C/C++ from Python?
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I started my journey in the Python <-> C++ binding from this page, with the objective of linking high level data types (multidimensional STL vectors with Python lists) :-)
Having tried the solutions based on both ctypes ...
What is the maximum number of characters that nvarchar(MAX) will hold?
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I just started my morning asking me the same question and both of your answers conjured a big smile on my face. +1.
– Matthis Kohli
Aug 16 '16 at 5:13
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npm - how to show the latest version of a package
...ideo explains how outdated and update work from NPM docs.npmjs.com/getting-started/updating-local-packages
– Metropolis
Sep 10 '18 at 5:21
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What are '$$' used for in PL/pgSQL
...The $$ is a delimiter you use to to indicate where the function definition starts and ends. Consider the following,
CREATE TABLE <name> <definition goes here> <options go here, eg: WITH OIDS>
The create function syntax is similar, but because you are going to use all sorts of SQ...
Rails.env vs RAILS_ENV
... get the current logger or RAILS_ROOT to get the path to the root folder.
Starting from Rails 2.x, Rails introduced the Rails module with some special methods:
Rails.root
Rails.env
Rails.logger
This isn't just a cosmetic change. The Rails module offers capabilities not available using the stand...
Solr vs. ElasticSearch [closed]
...with the recently introduced Amazon CloudSearch (see the introductory post Start Searching in One Hour for Less Than $100 / Month), because both claim to cover the same use cases in principle.
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Best practices for overriding isEqual: and hash
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Start with
NSUInteger prime = 31;
NSUInteger result = 1;
Then for every primitive you do
result = prime * result + var
For objects you use 0 for nil and otherwise their hashcode.
result = prime * result + [var hash...
Easy way to pull latest of all git submodules
...it after first pull that had submodules included, so that everything would start working properly.
– Ben Usman
May 12 '16 at 21:25
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