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sql query to return differences between two tables
...easchftreaschf
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How can I print the contents of a hash in Perl?
... your friend.
use Data::Dumper;
my %hash = ('abc' => 123, 'def' => [4,5,6]);
print Dumper(\%hash);
will output
$VAR1 = {
'def' => [
4,
5,
6
],
'abc' => 123
};
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How do I save a stream to a file in C#?
...by Tilendor in Jon Skeet's answer, streams have a CopyTo method since .NET 4.
var fileStream = File.Create("C:\\Path\\To\\File");
myOtherObject.InputStream.Seek(0, SeekOrigin.Begin);
myOtherObject.InputStream.CopyTo(fileStream);
fileStream.Close();
Or with the using syntax:
using (var fileStream...
Pipe to/from the clipboard in Bash script
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lhunathlhunath
95.9k1414 gold badges6060 silver badges7474 bronze badges
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整合phpcms v9和discuz X3.2实现同步登陆、退出免激活 - 更多技术 - 清泛网...
...用ID。（记住这个应用ID，在”第三步“中将用到它。）
4、进入后台“站长”，“UCenter 设置”选项。"是否允许直接激活"一项，选择“是”。
第三步：配置 phpsso 。
1、管理员登录 phpcms V9 后台管理中心，进入“phpsso”，点击...
Why does auto a=1; compile in C?
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240
auto is an old C keyword that means "local scope". auto a is the same as auto int a, and becaus...
How do I fix “for loop initial declaration used outside C99 mode” GCC error?
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149
I'd try to declare i outside of the loop!
Good luck on solving 3n+1 :-)
Here's an example:
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How to sum a variable by group
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404
Using aggregate:
aggregate(x$Frequency, by=list(Category=x$Category), FUN=sum)
Category x
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