大约有 40,000 项符合查询结果（耗时：0.0505秒） [XML]
Select first row in each GROUP BY group?
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On Oracle 9.2+ (not 8i+ as originally stated), SQL Server 2005+, PostgreSQL 8.4+, DB2, Firebird 3.0+, Teradata, Sybase, Vertica:
WITH summary AS (
SELECT p.id,
p.customer,
p.total,
ROW_NUMBER() OVER(PARTITION BY p.cus...
What's the shortest code to cause a stack overflow? [closed]
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All these answers and no Befunge? I'd wager a fair amount it's shortest solution of them all:
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Not kidding. Try it yourself: http://www.quirkster.com/iano/js/befunge.html
EDIT: I guess I need to explain this one. The 1 o...
Advances social tools app with cool UI - Koded Apps - Kodular Community
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Its one of special feature is that it allows the selection of only one emoji and no.of texts… that all other apps of such kind created in kodular cannot provide.
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How do I use reflection to invoke a private method?
There are a group of private methods in my class, and I need to call one dynamically based on an input value. Both the invoking code and the target methods are in the same instance. The code looks like this:
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How to convert byte array to string and vice versa?
... This might work, but you should avoid using String constructor at all cost.
– hfontanez
Jun 26 '17 at 17:13
t...
SVN Error - Not a working copy
...min to filter out old projects I no longer need. So my repository contains all the info I need, but has a new UUID. In this case, I'm just going to tar up the changed files, get a fresh checkout, and then untar.
– Drarok
Aug 28 '09 at 15:21
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C99 stdint.h header and MS Visual Studio
... Without this header I have no definitions for useful types such as uint32_t, etc.
7 Answers
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How do I fix PyDev “Undefined variable from import” errors?
...ncing the same issue with latest Eclipse and PyDev. I can navigate between all modules, so why code-analysis can't do the same?
– Adam
Sep 3 '14 at 11:41
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EF Migrations: Rollback last applied migration?
This looks like a really common task, but I can't find an easy way to do it.
14 Answers
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Cartesian product of multiple arrays in JavaScript
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Original 2017 Answer: 2-line answer with vanilla JS:
(see updates below)
All of the answers here are overly complicated, most of them take 20 lines of code or even more.
This example uses just two lines of vanilla JavaScript, no lodash, underscore or other libraries:
let f = (a, b) => [].concat...