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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...look at this excellent answer: https://stackoverflow.com/a/11227902/1001643
Compilers typically don't have enough information to know which branches will alias and whether those aliases will be significant. However, that information can be determined at runtime with tools such as Cachegrind and V...
Does anyone know what the new Exit icon is used for when editing storyboards using Xcode 4.5?
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3 Answers
3
Active
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Why is a div with “display: table-cell;” not affected by margin?
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310
Cause
From the MDN documentation:
[The margin property] applies to all elements except el...
What kind of virtual machine is BEAM (the Erlang VM)?
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3 Answers
3
Active
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ruby on rails f.select options with custom attributes
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356
Rails CAN add custom attributes to select options, using the existing options_for_select helpe...
TreeMap sort by value
...ng,Integer> map = new TreeMap<String,Integer>();
map.put("A", 3);
map.put("B", 2);
map.put("C", 1);
System.out.println(map);
// prints "{A=3, B=2, C=1}"
System.out.println(entriesSortedByValues(map));
// prints "[C=1, B=2, A=3]"
Note that funky stuff will h...
Responsive website zoomed out to full width on mobile
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379
Add this to your HTML head..
<meta name="viewport" content="width=device-width, initial-sc...
Programmatically get the cache line size?
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edited Aug 7 '18 at 15:03
Chai T. Rex
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answered ...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...s("../Department)
objNode = objNode.SelectNode("Employees/Employee")
2.3 查询已知元素名的节点（集）
在使用不规则的层次文档时，由于不知道中间层次的元素名，可使用//符号来越过中间的节点，查询其子，孙或多层次下的其他所有元素。...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...s("../Department)
objNode = objNode.SelectNode("Employees/Employee")
2.3 查询已知元素名的节点（集）
在使用不规则的层次文档时，由于不知道中间层次的元素名，可使用//符号来越过中间的节点，查询其子，孙或多层次下的其他所有元素。...