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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。...
Converting an integer to a hexadecimal string in Ruby
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327
You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNu...
Injecting $state (ui-router) into $http interceptor causes circular dependency
...
3 Answers
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Active
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JavaScript - cannot set property of undefined
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edited Feb 26 '17 at 23:31
answered Sep 20 '11 at 2:45
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How to restart a rails server on Heroku?
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435
The answer was:
heroku restart -a app_name
# The -a is the same as --app
Easily aliased wit...
Unix's 'ls' sort by name
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131
My ls sorts by name by default. What are you seeing?
man ls states:
List information about th...
jQuery: Count number of list elements?
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edited Nov 10 '15 at 23:36
gsamaras
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an...
Mock vs MagicMock
...'s author, Michael Foord, addressed a very similar question at Pycon 2011 (31:00):
Q: Why was MagicMock made a separate thing rather than just folding the ability into the default mock object?
A: One reasonable answer is that the way MagicMock works is that it preconfigures all these protoc...
Multiple left-hand assignment with JavaScript
...
Actually,
var var1 = 1, var2 = 1, var3 = 1;
is not equivalent to:
var var1 = var2 = var3 = 1;
The difference is in scoping:
function good() {
var var1 = 1, var2 = 1, var3 = 1;
}
function bad() {
var var1 = var2 = var3 = 1;
}
good();
cons...
C# 5 async CTP: why is internal “state” set to 0 in generated code before EndAwait call?
...ooAsync()
{
var t = new SimpleAwaitable();
for (int i = 0; i < 3; i++)
{
try
{
Console.WriteLine("In Try");
return await t;
}
catch (Exception)
{
Console.WriteLine("Trying again...");
...