guid

Questions about GUID's: Are they always fixed in length, and is the middle number always 4?

由 不打扰是莪最后的温柔 提交于 2019-12-12 08:22:20
问题 I just generated a few million GUID's turned them into a String and got the length... it was always the same. Can I rely on this fixed length of the GUID when converting to String? Also, is the middle number of the GUID always "4" as shown in this screenshot? 回答1: Yes, the length is fixed and yes, the middle number is always 4 when you use the standard tostring format. Some of the bits in GUID (known as a UUID almost anywhere that isn't windows) are fixed to indicate things like version etc..

php之大文件断点续传

由 蹲街弑〆低调 提交于 2019-12-12 08:10:02
前段时间做视频上传业务，通过网页上传视频到服务器。 视频大小 小则几十M，大则 1G+，以一般的HTTP请求发送数据的方式的话，会遇到的问题：1，文件过大，超出服务端的请求大小限制；2，请求时间过长，请求超时；3，传输中断，必须重新上传导致前功尽弃； 解决方案： 1，修改服务端上传的限制配置；Nginx 以及 PHP 的上传文件限制 不宜过大，一般5M 左右为好； 2，大文件分片，一片一片的传到服务端，再由服务端合并。这么做的好处在于一旦上传失败只是损失一个分片而已，不用整个文件重传，而且每个分片的大小可以控制在4MB以内，服务端限制在4M即可。 前端 Web前端可使用HttpUploader6的大文件上传控件6；官网地址： http://t.cn/EyI6vHh <div class="section section6 section5"> <div class="part1"><a href="javascript:;" target="_blank" class="part1__btn">批量删除</a><span class="part1__txt"><em class="part1__num" id="upload_num">0</em>个视频，共 <em class="part1__num" id="upload_size">0M</em></span></div>

guid/uuid in Typescript Node.js app

由 自闭症网瘾萝莉.ら 提交于 2019-12-12 07:39:09
问题 I try to make a uuid (v 3.0.1) package work in Node/Typescript app, but I'm not sure what should I import and how to use it. This is index.d.ts (from @types/uuid v 2.0.29): declare namespace uuid { interface V1Options { node?: number[]; clockseq?: number; msecs?: number | Date; nsecs?: number; } type V4Options = { random: number[] } | { rng: () => number[]; } interface UuidStatic { (options?: V4Options): string; (options: V4Options | null, buffer: number[], offset?: number): number[];

How to generate GUIDs automatically while creating a site using ASP.NET Dynamic Data?

由 牧云@^-^@ 提交于 2019-12-12 03:55:43
问题 I am having an SQL Server database, which is having a lots of table. Each of the table is having a primary column, which in fact is a GUID column. I have created new ASP.NET Dynamic data site to manage these tables. The problem is that, the GUIDs are not being generated and that's why the site breaks for all tables. I tried by adding "newID()" in SQL table, but it still fails. I believe I need to somehow do changes in code. I believe this might be an issue faced by many developers working

Getting two different GUIDs for an Assembly

由 隐身守侯 提交于 2019-12-12 03:42:27
问题 Let this piece of code : Dim GUID as String Dim GUID2 as String GUID = "{" & _ System.Reflection.Assembly.LoadFrom(binpath). _ GetCustomAttributes _ (GetType(Runtime.InteropServices.GuidAttribute), _ True)(0).Value.ToString.ToUpper & "}" GUID2 = "{" & _ Reflection.AssemblyName. _ GetAssemblyName(binpath).GetType.GUI‌D.ToString() & "}" Why GUID and GUID2 aren't the same value ? Edit : here, binpath leads to a (COM Visible) .NET dll 回答1: GetAssemblyName(binpath).GetType.GUI‌D.ToString() returns

Preinstalling Driver on Windows 8.1 Fails

由 ￣綄美尐妖づ 提交于 2019-12-11 22:21:56
问题 We have a few driver packages that we pre-install in the driver store on Windows with SetupCopyOEMInf, following Microsoft's suggested procedures. This process has worked properly for years; no problems on XP, Vista, 7, and even 8. While evaulating Windows 8.1 RTM, we found that our drivers were no longer pre-installing. Checking the setupapi.dev.log, I found: !!! sto: Failed to query boot critical status of device class. Error = 0x00000002 and later: !!! idb: Failed to query inbox status of

Are Guids unique when using a U-SQL Extractor?

由 陌路散爱 提交于 2019-12-11 17:48:53
问题 As these questions point out, Guid.NewGuid will return the same value for all rows due to the enforced deterministic nature of U-SQL i.e if it's scaled out if an element (vertex) needs retrying then it should return the same value.... Guid.NewGuid() always return same Guid for all rows auto_increment in U-SQL However.... the code example in the officials documentation for a User Defined Extractor purposefully uses Guid.NewGuid(). I'm not querying the validity of the answers for the questions

Procedure to change Credential Provider GUID for deployment

由 雨燕双飞 提交于 2019-12-11 15:41:34
问题 I have modified the 'SampleAllControlsCredentialProvider' from Windows Vista samples using Visual Studio 2013. I need to change its GUID before deploying it to the production systems. I have generated the GUID using visual studio create gui tool and changed the GUID in .vcproj, .vcxproj and .sln files. Also, put the same GUID in register.reg file. Now, the registry entries are made with this new GUID but credential provider does not load. If I use the old GUID in register.reg (that came with

How to compare two GUIDs in Linq to Entities

由 自闭症网瘾萝莉.ら 提交于 2019-12-11 12:14:17
问题 I am writing an L2E query to compare two GUID values.It simply doesn't allow direct comparison, and also .ToString() method is not allowed on L2E queries.. How can we achieve this? 回答1: I don't know if this applies to your case, but I found that I can use the Guid.CompareTo method in Linq, and it properly converts this to SQL. documentQuery.Where(s => s.DocumentGuid.CompareTo(MyGuidVariable) > 0); This produces the following SQL: AND ([Extent1].[DocumentGuid] > @p__linq__1) 回答2: you need to

How to fix preinstalled driver on Windows 8.1

由 北慕城南 提交于 2019-12-11 10:34:29
问题 Same situation as described in Preinstalling Driver on Windows 8.1 Fails. But is there a fix how to reinstall the same driver package (no guid change) without reinstalling 8.1? Situation: On a fresh Windows 8.1 installation (no upgrade from 8.0), our USB devices can't be installed. Behavior can be reproduce with a VM: create registry entries with class guid from inf file to show correct USB icon and create own group in device manager: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class
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