我有一个SQL Server数据库表,其中"ReceivedDate"列定义为"datetime",应该包含UTC日期......在我的C#代码中,我使用Entity Framework将表映射到一个类,该类具有相应的属性"ReceivedDate" "System.DateTime类型.
程序将日期从XML文件加载到DB中,稍后检查XML中的数据是否与DB中的数据相同...当XML和DB中的ReceivedDate的日期不匹配时,检查失败...例:
ReceivedDate from XML:
<ReceivedDate>2010-12-16T22:53:27.5912217Z</ReceivedDate>
ReceivedDate from DB:
2010-12-16 22:53:27.590
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经过一些调试后,我注意到DB中的日期没有将Kind属性设置为Utc,并且ticks的数量要少得多,因此日期比较失败......
我解决这个问题的方法是:
这是有效的,虽然我同意使用DateTimeOffset可能是更好的解决方案.
一旦您[RequireHttps]执行操作并且用户从HTTP切换到HTTPS,所有后续链接将保持HTTPS ...
有没有办法切换回HTTP?
我有一个Node.js应用程序,它有很少的本机模块,通过node-gyp创建.这些模块不会以"node_modules"结尾,并且需要来自Node的标准"require"...
我的webpack配置基于这篇文章 如果我运行应用程序"unpackaged" - 一切正常......但是在我运行"webpack -p --progress"并尝试运行它后,我得到以下信息:
X:\myapp>node main-backend.bundle.js env=production port=80 ssl_port=443
[Error: Cannot open X:\myapp\lib\modules\my-module\build\Release\mymodule.node: Error: The specified module could not be found.
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我确保所有的加载器都安装了npm.从错误,我可以告诉路径是正确的(相对于server.native.js),但显然不是app.js ...但是,当使用常规node.js时,这"只是工作",我不知道是否这甚至是问题的关键......
我将不胜感激任何帮助!
这是我的应用程序的简略布局
myapp/
app.js
node_modules/
lib/
modules/
my-module/
src/
one.cc
one.h
lib/
server.native.js
bindings.gyp
build/
Release/
mymodule.node
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server.native.js非常简单,调用本机模块
try {
module.exports = require('../build/Release/mymodule.node');
console.log('native module loaded...');
} catch (err) {
console.log(err);
}
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这是我的webpack.config.js
var webpack = require("webpack");
var path = require("path");
var fs = require("fs");
var nodeModules = {};
fs.readdirSync("node_modules")
.filter(function(x) {
return …Run Code Online (Sandbox Code Playgroud) 我有一个名为enum的类型,PaymentFrequency其值表示每年有多少付款......所以我有
public enum PaymentFrequency
{
None = 0,
Annually = 1,
SemiAnnually = 2,
EveryFourthMonth = 3,
Quarterly = 4,
BiMonthly = 6,
Monthly = 12,
EveryFourthWeek = 13,
SemiMonthly = 24,
BiWeekly = 26,
Weekly = 52
}
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基于NumberOfPayments,PaymentFrequency和,FirstPaymentDate(类型的DateTimeOffset)我想计算LastPaymentDate.但是我有一个问题是在SemiMonthly的情况下确定要添加多少时间单位(天,月)......
switch (paymentFrequency)
{
// add years...
case PaymentFrequency.Annually:
LastPaymentDate = FirstPaymentDate.AddYears(NumberOfPayments - 1);
break;
// add months...
case PaymentFrequency.SemiAnnually:
LastPaymentDate = FirstPaymentDate.AddMonths((NumberOfPayments - 1) * 6); // 6 months
break; …Run Code Online (Sandbox Code Playgroud) 当我注意到以下目标配置时,我正在查看NLog的一些最佳实践:
<targets async="true">
<default-wrapper xsi:type="BufferingWrapper" bufferSize="100"/>
<target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log" layout="${longdate} ${uppercase:${level}} ${message}" />
<!-- other stuff -->
</targets>
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根据我的理解,它使用AsyncWrapper和BufferingWrapper包装文件目标...
两者有什么区别?我是否需要两者,因为NLog网站将两者都描述为"缓冲"....
我很好奇在调用链中应该包含在使用Entity Framework时调用的位置.考虑以下方法:
// sample usage from service layer
// _customerRepository.Paginate(1, out totalRecords, 25, "DateJoined DESC, AmountSpent", "DateJoined >= '2009-02-01'", "Invoices, Refunds");
public virtual IQueryable<T> Paginate(int page, out int total, int pageSize, string sort = "Id", string filter = null, string includes = null)
{
IQueryable<T> query = DatabaseSet;
total = query.Count(); // get total # of records (required for pagination)...
var skipTo = GetValidSkipCount(page, total, pageSize);
if (!String.IsNullOrWhiteSpace(filter))
{
query.Where(filter);
}
// should includes be before filtering?
// should query.Count() …Run Code Online (Sandbox Code Playgroud) 与对应的MVC问题一致,是否有一种方法可以为ASP.NET Web API中的泛型类型创建模型绑定程序?
如果是,如何处理绑定器中的类型检查和实例化?假设模型资料夹是用于URL参数的,请考虑
[ModelBinder(typeof(MyTypeModelBinder))]
public class MyType<T>
{
//...
}
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和
public class MyTypeModelBinder : IModelBinder
{
public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext)
{
// check if type if valid? Something like this...
if (!(bindingContext.ModelType.IsGenericType && bindingContext.ModelType.GetGenericTypeDefinition() == typeof(MyType<>)))
{
return false;
}
// create instance...using Activator?
}
}
Run Code Online (Sandbox Code Playgroud) 当使用company作为命名空间标识符的一部分时,如果公司名称由多个单词组成且全部为大写字母,应该怎么称呼?
请注意,公司的网站、所有文件以及每份印刷材料都使用这种形式,因此这不仅仅是品牌/徽标的问题 - 这就是公司名称的实际使用方式。
以名为“ FASTDATA ”的公司为例
有许多变化可以应用
Fastdata.Product.Feature
FastData.Product.Feature
FASTDATA.Product.Feature
MyCompany.Product.Integration.Fastdata
MyCompany.Product.Integration.FastData
MyCompany.Product.Integration.FASTDATA
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我一直在阅读框架设计指南:可重用 .NET 库的约定、习语和模式,第二版,但似乎没有针对这种情况的指导......
在 PG v9.4 及更高版本上,我想将一些数据(基于 SELECT 语句)导出为JSON 数组。
标准 json_agg 返回我想要的内容,但它返回对象数组(其中对象键是列名称)例如此查询:
SELECT json_agg(data_rows)
FROM (
-- in memory table sample
SELECT * FROM
(VALUES
('John',now(),1940,'Winston','Lennon'),
('Paul',now(),1942,'','McCartney'),
('George',now(),1943,NULL,'Harrison'),
('Ringo',now(),1940,'my passions are ring,drum and shades','Starr')
) AS x("FirstName", "CurrentDt", "BirthYear", "MiddleName", "LastName")
ORDER BY "BirthYear" DESC, "FirstName" DESC
) AS data_rows
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返回以下内容:
[
{"FirstName":"George","CurrentDt":"2016-09-12T13:13:07.862485-04:00","BirthYear":1943,"MiddleName":null,"LastName":"Harrison"},
{"FirstName":"Paul","CurrentDt":"2016-09-12T13:13:07.862485-04:00","BirthYear":1942,"MiddleName":"","LastName":"McCartney"},
{"FirstName":"Ringo","CurrentDt":"2016-09-12T13:13:07.862485-04:00","BirthYear":1940,"MiddleName":"my passions are ring,drum and shades","LastName":"Starr"},
{"FirstName":"John","CurrentDt":"2016-09-12T13:13:07.862485-04:00","BirthYear":1940,"MiddleName":"Winston","LastName":"Lennon"}
]
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但我想要的是:
[
["George","2016-09-12T13:13:07.862485-04:00",1943,null,"Harrison"},
["Paul","2016-09-12T13:13:07.862485-04:00",1942,"","McCartney"},
["Ringo","2016-09-12T13:13:07.862485-04:00",1940,"my passions are ring,drum and shades","Starr"},
["John","2016-09-12T13:13:07.862485-04:00",1940,"Winston","Lennon"}
]
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我尝试使用这里提到的技巧首先将行转换为 hstore,但这样做的问题是没有保留列排序......所以这个查询:
SELECT json_agg(avals(hstore(data_rows))) …Run Code Online (Sandbox Code Playgroud) c# ×5
datetime ×2
.net ×1
arrays ×1
asp.net ×1
asp.net-mvc ×1
date ×1
json ×1
logging ×1
module ×1
namespaces ×1
nlog ×1
node.js ×1
postgresql ×1
requirehttps ×1
server-side ×1
sql ×1
sql-server ×1
utc ×1
webpack ×1