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程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...知道了用户密码，那么就可以冒充用户了。
比如银行的U盾，因为我对这块业务不了解，我猜银行为每个用户发放了一个公钥？（ 知道的同学，可以帮忙解释一下银行的U盾都做了什么? )
我们用数字证书确定了银行的身份，那...
How to find SQL Server running port?
... -n" (from an elevated command prompt) and you don't see "sqlservr.exe" at all then either your SQL Server service is not running or its TCP/IP network library is disabled.
Run SQL Server Configuration Manager (Start | All Programs | Microsoft SQL Server 2008 | Configuration Tools).
Navigate to SQ...
How to remove the URL from the printing page?
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This actually worked on my Firefox 50 @MirzhanIrkegulov
– aexl
Dec 3 '16 at 23:44
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UITableView row animation duration and completion callback
...o either specify the duration for UITableView row animations, or to get a callback when the animation completes?
10 Answers...
Disable scrolling in webview?
...mething I haven't been able to figure out on Android is how to programmatically prevent scrolling in a WebView ?
14 Answer...
Convert timestamp to readable date/time PHP
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Use PHP's date() function.
Example:
echo date('m/d/Y', 1299446702);
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Sequence contains no elements?
...boxes for the title and content, the ID and date aren't put on the page at all. Could this be the reason for it passing them as null\new?
– Andy Hunt
Aug 24 '09 at 19:43
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NSPredicate: filtering objects by day of NSDate property
...the solution will involve an NSPredicate , but I'm not sure how to put it all together.
9 Answers
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How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your ...
Postgresql not creating db with “createdb” as superuser, yet not outputting errors [duplicate]
I am working with a fresh postgresql install, with 'postgres' super user. Logged in via:
5 Answers
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