روش های مقایسه اشیاء با null
Check | Code | Description |
Is Null | if(variable is null) return true; |
|
Is Not Null | if(variable is { }) return false |
|
Is Not Null | if(variable is object) return false |
|
Is Null | if(variable == null) return true |
|
Is Not Null | if(variable != null) return false |
|
The April release of the Azure Data Studio. Included in this release is:
- Added a new Welcome page.
- Added new markdown toolbar for Notebooks.
- Announcing KQL Magic support in Notebooks.
- Charting in SQL Notebooks can now be saved.
- Announcing improvements to Azure Data Studio dashboards.
- Support for Always Encrypted.
- Bug fixes.
- This update contains fixes for issues that were fixed after the release of SQL Server 2016 SP1.
- The latest 2016 SP1 update is CU2 - 4013106
- You may have been directed here from a previous SP1 Cumulative Update Knowledge Base (KB) article (See SQL Server 2016 SP1 build versions)
- This Cumulative Update includes all fixes from all previous SP1 Cumulative Updates, therefore it can be installed to resolve issues fixed in any previous SP1 CU
مسیریابی در AngularJs #بخش اول
1)OPTIONS file:///E:/Users/admin/Downloads/Compressed/RouteExample/RouteExample/templates/page_two.html No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. angular.min.js:99 2)XMLHttpRequest cannot load file:///E:/Users/admin/Downloads/Compressed/RouteExample/RouteExample/templates/page_two.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.
- WMI Provider MSI still failing to install in 16.6
- View History on context menu in Solution Explorer doesn't do anything
- Cannot generate shim for X509Certificate2 with Visual Studio 2019 16.6.0
- Add Controller and Add New Scaffolded Item dialogs are not showing all data contexts after upgrading Visual Studio Enterprise 16.5.6->16.6.0
- Cannot open new json file
- About Microsoft Visual Studio frozen.
- Visual Studio 2019 16.6.0 Microsoft Fakes Issue
- VSSDK IVsHierarchy Regression in VS 16.6.x
- Windows 10 SDK (10.0.19041.1)- ARM64 memcpy crashes when accessing unaligned uncached memory
- Add script to SQL Server Database project does not open User Scripts list
- Fakes generation with ref argument
- Frequent soft hang with Code Analysis callstack in Open Folder project
- Visual Studio Class Designer dark theme support
- Added support for Text Template Transformation Toolkit (T4) in .NET Core projects
- Separate IntelliCode team completions model acquisition from model production.
- Addressed an issue where users may have experienced critical update or installation failures due to the WMIProvider package that would block use of the IDE. Failures in this component no longer block use of the IDE.
- Fixed a problem causing the product to stop responding when working with Xamarin projects on certain scenarios.
- Fixed a bug where VS would crash when attempting to decrypt an invalid UWP code-signing certificate
فناوری blockchain چیست
So, what is a blockchain? It's a complicated question because the inventor of Bitcoin, the pseudonymous Satoshi Nakamoto, didn't use the term in the original Bitcoin paper.
For many, “the blockchain” is nothing more than a shorthand for "how
Bitcoin works." But more usefully, the blockchain is a distributed
ledger, shared by untrusted participants, with strong guarantees about
accuracy and consistency
Please see the SQL Server Management Studio release notes for a comprehensive list of bug fixes.