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Booleans, conditional operators and autoboxing
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The difference is that the explicit type of the returnsNull() method affects the static typing of the expressions at compile time:
E1: `true ? returnsNull() : false` - boolean (auto-unboxing 2nd operand to boolean)
E2: `true ? null : false` - Boolean (auto...
Failed to instantiate module [$injector:unpr] Unknown provider: $routeProvider
... remove the $routeProvider dependency from your module .config() and substitute it with the relevant provider of choice (e.g. $stateProvider). You would then use the ui.router dependency:
var app = angular.module('MyApp', ['ui.router', ...]);
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“ValueError: zero length field name in format” error in Python 3.0,3.1,3.2
...follow
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edited Apr 26 '15 at 22:12
answered Mar 27 '11 at 4:01
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How to read attribute value from XmlNode in C#?
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Try this:
string employeeName = chldNode.Attributes["Name"].Value;
Edit: As pointed out in the comments, this will throw an exception if the attribute doesn't exist. The safe way is:
var attribute = node.Attributes["Name"];
if (attribute != null){
string employeeName = attribute.Value;
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Node.js - Find home directory in platform agnostic way
...follow
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edited Jun 8 '18 at 13:56
answered Jan 31 '12 at 14:43
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I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
... and I am pasting the error messages underneath:
I am trying to use setOnItemClickListener on the spinner, is it permissible?
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What is the difference between static_cast and C style casting?
...ail at runtime.
Also, c++ style casts can be searched for easily, whereas it's really hard to search for c style casts.
Another big benefit is that the 4 different C++ style casts express the intent of the programmer more clearly.
When writing C++ I'd pretty much always use the C++ ones over th...
Spring Boot: How can I set the logging level with application.properties?
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Update: Starting with Spring Boot v1.2.0.RELEASE, the settings in application.properties or application.yml do apply. See the Log Levels section of the reference guide.
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ...
Single quotes vs. double quotes in C or C++
...e quotes identify a single character, while double quotes create a string literal. 'a' is a single a character literal, while "a" is a string literal containing an 'a' and a null terminator (that is a 2 char array).
In C++ the type of a character literal is char, but note that in C, the type of a c...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
...rybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致是类型和级别...