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一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...一下在这样一个体系下如何完成支付。以老张付给老李10个比特币为例。
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为了支付10个比特币，老张首先要询问老李的标识字符串，例如是“ABCDEFG”，同时老张也有一个标识字符串例如是“HIJKLMN”，然后老...
How to prevent caching of my Javascript file? [duplicate]
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CurtCurt
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How to split a delimited string in Ruby and convert it to an array?
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answered Jun 10 '09 at 13:59
ShadwellShadwell
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Convert Unix timestamp into human readable date using MySQL
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406
Use FROM_UNIXTIME():
SELECT
FROM_UNIXTIME(timestamp)
FROM
your_table;
See also: MySQL...
How do I check if a SQL Server text column is empty?
I am using SQL Server 2005. I have a table with a text column and I have many rows in the table where the value of this column is not null, but it is empty. Trying to compare against '' yields this response:
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How to remove all white spaces in java [duplicate]
...s one by one.
– Lii
Dec 21 '16 at 9:05
1
replaceAll("\\p{Blank}","") can also be used as it remov...
How to remove remote origin from Git repo
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edited Jan 28 at 11:06
Dmitriy
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answered Ma...
Convert NSDate to NSString
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470
How about...
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFor...
How to comment lines in rails html.erb files? [duplicate]
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edited Aug 26 at 12:40
gumgl
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answered Oct 10 '10 at 18:43
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Checking if form has been submitted - PHP
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edited Dec 30 '15 at 9:31
answered Oct 10 '11 at 10:32
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