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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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MonthYearM..MonthYearN
Oct2001..Jan2002
Oct2001,Nov2001,Dec2001,Jan2002
③ 集成员不放在集定义中，而在随后的数据部分来定义。
例2.2
!集部分;
sets:
students:sex,age;
endsets
!数据部分;
data:
students,sex,age= John 1 16
...
Operator overloading in Java
...an example is worth a thousand arguments. Given m0 as a Matrix and v0, v1, v2, v3, and v4 as Vectors, simply compare how long it takes you to correctly interpret the following mathematical expression m0.transpose().mult(v0.add(v1.mult(v2)).cross(v3)).sub(v4);. Had support for operator overloading be...
Floating point vs integer calculations on modern hardware
...ype)(rand() % 256)/16 + 1;
Type v1 = (Type)(rand() % 256)/16 + 1;
Type v2 = (Type)(rand() % 256)/16 + 1;
Type v3 = (Type)(rand() % 256)/16 + 1;
Type v4 = (Type)(rand() % 256)/16 + 1;
Type v5 = (Type)(rand() % 256)/16 + 1;
Type v6 = (Type)(rand() % 256)/16 + 1;
Type v7 = (Type)(rand() %...
how does multiplication differ for NumPy Matrix vs Array classes?
...
The main reason to avoid using the matrix class is that a) it's inherently 2-dimensional, and b) there's additional overhead compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free t...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...MD5 tests
std::copy memcpy % difference
5.52 5.56 +0.72%
5.56 5.55 -0.18%
5.57 5.53 -0.72%
5.57 5.52 -0.91%
5.56 5.57 +0.18%
5.56 5.57 +0.18%
5.56 5.53 -0.54%
5.53 5.57 +0.72%
5.59...
How to manually create icns files using iconutil?
...ould be stored at 144 pixels per inch while the others should be stored at 72 pixels per inch.
– carmin
Oct 23 '13 at 20:44
...
How to reverse apply a stash?
...ad a reference about un-applying a stash. The excerpt is below.
The newer V2 git man page doesn't include any reference to un-applying a stash but the below still works well
Un-applying a Stash
In some use case scenarios you might want to apply stashed changes, do some work, but then un-apply thos...
What does the git index contain EXACTLY?
...77ff112 (read-cache: load cache entries on worker threads, 2018-10-10, Git v2.20.0-rc0).
Digging on the mailing list, that parameter was part of an earlier iteration of the series, but became unnecessary when the code switched to using the IEOT extension.
With Git 2.29 (Q4 2020), the format descri...
How to get share counts using graph API
...digg.com/buttons/count?url=%%URL%% Delicious:
http://feeds.delicious.com/v2/json/urlinfo/data?url=%%URL%%
StumbleUpon:
http://www.stumbleupon.com/services/1.01/badge.getinfo?url=%%URL%%
Pinterest:
http://widgets.pinterest.com/v1/urls/count.json?source=6&url=%%URL%%
Edit:
Removed the ...
How to stop /#/ in browser with react-router?
...
They changed the browserHistory in v2.x : import { browserHistory } from 'react-router' <Router history={browserHistory} /> Check react-router upgrade guide
– pistou
Jan 6 '16 at 9:19
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