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What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
When storing latitude or longitude data in an ANSI SQL compliant database, what datatype would be most appropriate? Should float be used, or decimal , or ...?
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What are the use-cases for Web Workers? [closed]
I am looking for real-world scenarious for using Web Workers API .
3 Answers
3
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NPM cannot install dependencies - Attempt to unlock something which hasn't been locked
...y package.json file, but I'm having a lot of trouble. It keeps saying "Error: Attempt to unlock XXX, which hasn't been locked" on all my dependences. Here's one of them:
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How do I set a ViewModel on a window in XAML using DataContext property?
... addition to the solution that other people provided (which are good, and correct), there is a way to specify the ViewModel in XAML, yet still separate the specific ViewModel from the View. Separating them is useful for when you want to write isolated test cases.
In App.xaml:
<Application
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Get the IP address of the remote host
...o access depends on whether you're using the Web API under IIS (webhosted) or self-hosted. The code below shows how this can be done.
private string GetClientIp(HttpRequestMessage request)
{
if (request.Properties.ContainsKey("MS_HttpContext"))
{
return ((HttpContextWrapper)request....
Simplest way to do a fire and forget method in C#?
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ThreadPool.QueueUserWorkItem(o => FireAway());
(five years later...)
Task.Run(() => FireAway());
as pointed out by luisperezphd.
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Sending email with attachments from C#, attachments arrive as Part 1.2 in Thunderbird
I have a C# application which emails out Excel spreadsheet reports via an Exchange 2007 server using SMTP. These arrive fine for Outlook users, but for Thunderbird and Blackberry users the attachments have been renamed as "Part 1.2".
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Accessing localhost:port from Android emulator
... and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If your emulator must access the internet through a proxy server, you can configure a custom HTTP proxy from the emulator's Extended controls screen. With the emulator open, click More , and then click Settings and...
Schrödingers MySQL table: exists, yet it does not
I am having the weirdest error of all.
11 Answers
11
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Using property() on classmethods
I have a class with two class methods (using the classmethod() function) for getting and setting what is essentially a static variable. I tried to use the property() function with these, but it results in an error. I was able to reproduce the error with the following in the interpreter:
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