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Vertically align an image inside a div with responsive height
...g code which sets up a container which has a height that changes with the width when the browser is re-sized (to maintain a square aspect ratio).
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Android - custom UI with custom attributes
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Yes. Short guide:
1. Create an attribute XML
Create a new XML file inside /res/values/attrs.xml, with the attribute and it's type
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<declare-styleable name="MyCustomEl...
e.printStackTrace equivalent in python
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import traceback
traceback.print_exc()
When doing this inside an except ...: block it will automatically use the current exception. See http://docs.python.org/library/traceback.html for more information.
sha...
20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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1 0 0 810420 97380 70628 0 0 115 4 89 79 1 6 90 3 0
3. lsof — 打开文件列表
lsof 命令对于很多 Linux/Unix 系统都可以使用，主要以列表的形式显示打开的文...
DESTDIR and PREFIX of make
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In case the ./configure file is not provided, one can still install to user-specific directory using: make prefix=/path/to/your/lib/libaio install
– Good Will
Dec 30 '18 at 22:24
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Get all column names of a DataTable into string array using (LINQ/Predicate)
... a new question and include details of your code. But essentially: A DataGrid is not the same as a DataTable.
– Daniel Hilgarth
May 17 '13 at 8:08
3
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Selecting the first “n” items with jQuery
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Thank you, a side requirement of my request was about performances, so this the right answer for me. Thanks to the others for pointing out the :lt selector too.
– Omiod
Dec 8 '09 at 10:33
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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
...elling the SQL engine how to do the work.
As a general rule, it is a good idea to let the SQL engine and SQL optimizer find the best query plan. There are many person-years of effort that go into developing a SQL engine, so let the engineers do what they know how to do.
Of course, there are situa...
Replace a value if null or undefined in JavaScript
...ment to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...ne from the other is where your problem lies.
The first argument in slice identifies not the element but the places between elements, defining spans (and not elements themselves):
:peanut :butter :and :jelly
0 1 2 3 4
4 is still within the array, just barely; ...