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Reshaping data.frame from wide to long format
... answered Jan 9 '18 at 5:31
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
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Why is reading lines from stdin much slower in C++ than Python?
... community wiki
7 revs, 6 users 85%Bela Lubkin
28
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Is Integer Immutable
...HashCode(a)));
prints
before a +=3; a=3 id=70f9f9d8
after a +=3; a=6 id=2b820dda
You can see the underlying "id" of the object a refers to has changed.
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iTunes音乐搜索 · App Inventor 2 中文网
... 网址里不能直接出现中文和空格，
周杰伦 得先转换成 %E5%91%A8%E6%9D%B0%E4%BC%A6 这样的形式才能发出去。
UriEncode 就是干这个的——少了它，搜英文歌手名（Jay Chou 中间有空格）
和搜中文歌手名都会失败。
Web客户端1.执行GET请求() ...
How to remove spaces from a string using JavaScript?
...lts are:
regexp1a: Safari 50.14 ops/sec, Firefox 18.57, Chrome 8.95
regexp2b: Safari 38.39, Firefox 19.45, Chrome 9.26
split-join: Firefox 26.41, Safari 23.10, Chrome 7.98,
You can run it on your machine: https://jsperf.com/remove-string-spaces/1
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Timer function to provide time in nano seconds using C++
... community wiki
2 revs, 2 users 85%VonC
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How do I print out the contents of an object in Rails for easy debugging?
...requiring is required.
@a = Accrual.first ; pp @a
#<Accrual:0x007ff521e5ba50
id: 4,
year: 2018,
Jan: #<BigDecimal:7ff521e58f08,'0.11E2',9(27)>,
Feb: #<BigDecimal:7ff521e585d0,'0.88E2',9(27)>,
Mar: #<BigDecimal:7ff521e58030,'0.0',9(27)>,
Apr: #<BigDecimal:7ff521e53698,...
Assign one struct to another in C
...assign>:
401050: 55 push %ebp
401051: 89 e5 mov %esp,%ebp
401053: a1 20 20 40 00 mov 0x402020,%eax
401058: a3 30 20 40 00 mov %eax,0x402030
40105d: a1 24 20 40 00 mov 0x402024,%eax
401062: a3 3...
How do I change the background color of the ActionBar of an ActionBarActivity using XML?
...; actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#E5E4E2")));
– rockydgeekgod
Jan 15 '15 at 20:15
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What does the “map” method do in Ruby?
... Here's my copy/paste of your code: gist.github.com/tjmcewan/a7e4feb2976a93a5eef9
– tjmcewan
Jun 27 '14 at 3:34
Yeah, ...