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What characters are allowed in an email address?
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See RFC 5322: Internet Message Format and, to a lesser extent, RFC 5321: Simple Mail Transfer Protocol.
RFC 822 also covers email addresses, but it deals mostly with its structure:
addr-spec = local-part "@" domain ; glob...
Convert.ChangeType() fails on Nullable Types
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edited Feb 3 '15 at 13:29
answered Aug 20 '10 at 14:29
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[完整源码实例] 修改 CListCtrl 的标题栏字体颜色；重绘 CListCtrl 标题栏 ...
... 0, // cStrikeOut
ANSI_CHARSET, // nCharSet
OUT_DEFAULT_PRECIS, // nOutPrecision
CLIP_DEFAULT_PRECIS, // nClipPrecision
DEFAULT_QUALI...
Unit testing that events are raised in C# (in order)
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edited May 12 '11 at 15:38
David Hall
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round() for float in C++
...ath (according to http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf)
#include <cmath>
#include <iostream>
int main(int argc, char** argv) {
std::cout << "round(0.5):\t" << round(0.5) << std::endl;
std::cout << "round(-0.5):\t" << round(...
How do I select a random value from an enumeration?
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answered Jun 28 '10 at 12:03
Darin DimitrovDarin Dimitrov
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python pandas remove duplicate columns
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edited Aug 23 '19 at 13:30
Jean-François Corbett
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How do I print the type of a variable in Rust?
...e, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched types
--> src/main.rs:2:29
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2 | let mut my_number: () = 32.90;
| ^^^^^ expected (), found floating-point number
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= ...
How to check if one DateTime is greater than the other in C#
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Ryan RinaldiRyan Rinaldi
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Given a view, how do I get its viewController?
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