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Comparing strings with == which are declared final in Java
...ing" will give you true, because string literals are interned.
From JLS §4.12.4 - final Variables:
A variable of primitive type or type String, that is final and initialized with a compile-time constant expression (§15.28), is called a constant variable.
Also from JLS §15.28 - Constant Exp...
How to reshape data from long to wide format
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answered May 4 '11 at 23:20
ChaseChase
59.5k1515 gold badges131131 silver badges157157 bronze badges
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Swift: declare an empty dictionary
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edited Jul 24 '16 at 9:38
answered Jun 4 '14 at 9:15
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Is there any advantage of using map over unordered_map in case of trivial keys?
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415
Don't forget that map keeps its elements ordered. If you can't give that up, obviously you can...
Two-dimensional array in Swift
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OR
let myVar = 18
arr[0][1] = myVar
Change sub array
arr[1] = [123, 456, 789]
OR
arr[0] += 234
OR
arr[0] += [345, 678]
If you had 3x2 array of 0(zeros) before these changes, now you have:
[
[0, 0, 234, 345, 678], // 5 elements!
[123, 456, 789],
[0, 0]
]
So be aware that sub...
Command copy exited with code 4 when building - Visual Studio restart solves it
...e (with 7 projects in it) I get the dreaded 'Command copy exited with code 4' error, in Visual Studio 2010 Premium ed.
27 A...
Compile error: “g++: error trying to exec 'cc1plus': execvp: No such file or directory”
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answered Jan 16 '14 at 6:20
hahakubilehahakubile
4,73444 gold badges2222 silver badges1818 bronze badges
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Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学习）学习笔记整理系列
zouxy09@qq.com
http://blog.csdn.net/zouxy09
作者：Zouxy
version 1.0 2013-04-08
原文网址：http://blog.csdn.net/zouxy09/article/detai...
Version vs build in Xcode
... app that I developed with Xcode 3 and recently started editing with Xcode 4. In the target summary I have the iOS application target form with fields: identifier, version, build, devices, and deployment target. The version field is blank and the build field is 3.4.0 (which matches the version of th...