The Lounge - CodeProject

OriginalGriff29-Jul-20 4:35

29-Jul-20 4:35

I permanent mark them with an ID code (using one of these: Brother P-Touch 65 Labelling Machine: Amazon[^] and then record usage / location in a spreadsheet (which one day I'll get round to databasing, but it's a low priority).
Since I also include my USB sticks^*, it's just easier as a spreadsheet has more space than a label would.

* Windows recovery, AOMEI restore bootable, Win 10 fresh install bootable, that kind of thing.

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"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
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Re: Lables for external disks

Kris Lantz29-Jul-20 4:39

Kris Lantz

29-Jul-20 4:39

I've gone the cheap route with masking/painter's tape and a sharpie. It has suited my needs.

Re: Lables for external disks

F-ES Sitecore29-Jul-20 5:13

F-ES Sitecore

29-Jul-20 5:13

pkfox wrote:
I currently use yellow postits to lable them but obviously they don't last very long - anyone gor any suggestions as to what I could use ?

Blue ones.

Re: Lables for external disks

User 1106097929-Jul-20 5:18

User 11060979

29-Jul-20 5:18

Try this

https://cdn.officeworld.ch/bilder/groesser/8972863438878.jpeg[^]

It does not solve my Problem, but it answers my question
Chemists have exactly one rule: there are only exceptions

modified 19-Jan-21 21:04pm.

Re: Lables for external disks

Gary R. Wheeler29-Jul-20 13:32

Gary R. Wheeler

29-Jul-20 13:32

It's less of a joke than you might think. We now use 32GB SanDisk Flash drives as our distribution medium for all software: OS images, products, etc. It's cheaper and faster than burning DVD's and such.

I personally use paper tags just like the one you showed for items I submit to manufacturing. Of course, they turn around and make fancy-schmancy printed tags that the customer sees Roll eyes | :rolleyes:

Software Zen: delete this;

Re: Lables for external disks

GuyThiebaut29-Jul-20 5:54

GuyThiebaut

29-Jul-20 5:54

I write the on a square of paper and sellotape the paper, along each edge, to the drive.
This has worked well for me for the past 12 years.

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Re: Lables for external disks

Jacquers29-Jul-20 6:26

Jacquers

29-Jul-20 6:26

I was just about to suggest engraving them Smile | :)

Re: Lables for external disks

W∴ Balboos, GHB29-Jul-20 7:14

W∴ Balboos, GHB

29-Jul-20 7:14

Back in my lab days I used a rapidograph to write on flasks and other things. They're a type of drafting pen and write with india ink.

On glass, although it sticks and is 100% immune to any solvent (even strong acids/bases) once dry (that's why I used it) it can be wiped off.

I wouldn't gurantee removal from a label but you can write directly on the drive's metal. Wipe it off when you want. It must be clean (i.e., wetable, non-greasy)

Ravings en masse^
"The difference between genius and stupidity is that genius has its limits." - Albert Einstein
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Re: Labels for external disks

Daniel Pfeffer29-Jul-20 8:07

Daniel Pfeffer

29-Jul-20 8:07

You can still buy diskette labels (Avery code L7666-25) on Amazon.

Other removable labels (smaller or larger, cheaper or more expensive) may be found there as well.

Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.

Is there a parser for .NET expression trees?

honey the codewitch29-Jul-20 3:51

honey the codewitch

29-Jul-20 3:51

@SanderRossel I believe you've used them before. Do you know anything that will let me do like Expression<t>.Parse("1 + x"); or similar?

Anyone? Bueller?

Basically, I already have the code to parse C# expressions and turn them into trees. I'd simply have to modify it to make expression trees instead of codedom expression trees.

The question is, am I reinventing the wheel?

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Richard Deeming29-Jul-20 3:59

Richard Deeming

29-Jul-20 3:59

How about the Dynamic Linq library?
GitHub - zzzprojects/System.Linq.Dynamic.Core: The .NET Standard / .NET Core version from the System Linq Dynamic functionality.[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Is there a parser for .NET expression trees?

honey the codewitch29-Jul-20 4:06

honey the codewitch

29-Jul-20 4:06

Thanks. I may create it anyway since it's not part of microsoft's framework, but it depends if their input language is a C# subset like mine is.

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Oleg Shilo30-Jul-20 3:30

Oleg Shilo

30-Jul-20 3:30

Are you looking for something like that?

var product = CSScript.CreateFunc<int>(@"int Product(int a, int b)
                                         {
                                             return a * b;
                                         }");
int result = product(3, 4);

The solution (cs-script) is based on Roslyn engine.

Re: Is there a parser for .NET expression trees?

Sander Rossel29-Jul-20 5:41

Sander Rossel

29-Jul-20 5:41

How about the following?

static void Main()
{
    Expression<Func<int, int>> exp = x => 1 + x;
}

exp.Body is now of the type SimplyBinaryExpression, with a ConstantExpression for Left and PrimitiveParameterExpression for Right, etc.

That's the only way I can think of turning code into Expressions.
If you can parse an actual string in .NET, I don't know.
Apparently there's a library that does it: Dynamic Expressions · zzzprojects/System.Linq.Dynamic Wiki · GitHub[^]

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

honey the codewitch29-Jul-20 5:48

honey the codewitch

29-Jul-20 5:48

Cool, maybe I'll write it then. I already have a C# subset parser.

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Sander Rossel29-Jul-20 8:23

Sander Rossel

29-Jul-20 8:23

honey the codewitch wrote:
Cool, maybe I'll write it then.

Me: "There's a library that does that."
You, a typical programmer (in this regard): *Sigh* "Fine, I'll do it myself!"

Laugh | :laugh:

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

honey the codewitch29-Jul-20 8:29

honey the codewitch

29-Jul-20 8:29

LOL

I've been looking at one, I'm just not sure if I like it.

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Sander Rossel29-Jul-20 8:46

Sander Rossel

29-Jul-20 8:46

Here's one simple trick and developers hate it!

string theCodez = "1 + x;";
var exp = (Expression)theCodez;

True story.

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

honey the codewitch29-Jul-20 10:45

honey the codewitch

29-Jul-20 10:45

wow. just... wow.

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Sander Rossel29-Jul-20 22:08

Sander Rossel

29-Jul-20 22:08

I just thought of something.
If you could ever find that eval-like function, you could do something like Eval($"Expression<Func<int, int>> exp = {myCode};"); and the exp variable would be available outside the Eval function in your current scope Big Grin | :-D

I remember the context in which I saw that function.
The customer wanted to do stuff like enter "amount * 10", sort of a calculator utility inside the application.
My coworker was like, "I could write a parser and spend a few days, or I can do it like this and be done with it" Laugh | :laugh:

I should mention it was VB.NET though and I think it was somewhere inside a VB specific namespace (although I'm not sure).
I think I saw it work with C# once too.
The fact that I can't find this function anywhere is really pissing me off (not that I'd want to use it) Sigh | :sigh:

I did find some smart guy who just compiled a string using reflection (using ICodeCompiler.CompileAssemblyFromSource) and then simply invokes it Laugh | :laugh:

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

honey the codewitch30-Jul-20 1:13

honey the codewitch

30-Jul-20 1:13

Sander Rossel wrote:
My coworker was like, "I could write a parser and spend a few days, or I can do it like this and be done with it

I can write an expression parser in about a day, but it would take forever to test

Sander Rossel wrote:
I did find some smart guy who just compiled a string using reflection (using ICodeCompiler.CompileAssemblyFromSource) and then simply invokes it

I actually considered that approach. Or using Roslyn.

I think I'll avoid the Eval function, wherever it is. It probably compiles code anyway.

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Sander Rossel30-Jul-20 11:50

Sander Rossel

30-Jul-20 11:50

honey the codewitch wrote:
but it would take forever to test

I wrote some TagHelpers for ASP.NET Core Razor and all your writing inspired me to write an article about it.
So, clean up the code a bit (which took me hours, it was a mess, you'd be proud Laugh | :laugh:

) and add unit tests...

Turns out it's pretty much impossible to unit test those things!
Here's the unit tests for the InputTagHelper: Mvc/InputTagHelperTest.cs at master · aspnet/Mvc · GitHub[^]
That's almost 2000 lines and I inherited that thing WTF | :WTF:

I'd need to test others too, like Mvc/SelectTagHelperTest.cs at master · aspnet/Mvc · GitHub[^] and Mvc/ValidationMessageTagHelperTest.cs at master · aspnet/Mvc · GitHub[^], another 1300 something LOC just for the basic tests Frown | :(

But it doesn't stop there.
It makes use of a "TestableHtmlGenerator", which I'm obviously going to need.
Luckily, it's not a big class, but what the hell does it all do? Smile | :)

Mvc/TestableHtmlGenerator.cs at master · aspnet/Mvc · GitHub[^]

A single test would need about as much LOC as my entire library Sigh | :sigh:

So to hell with unit tests and back to some good old manual testing and praying for the best Laugh | :laugh:

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

honey the codewitch30-Jul-20 11:56

honey the codewitch

30-Jul-20 11:56

Sander Rossel wrote:
So to hell with unit tests and back to some good old manual testing and praying for the best

That's the spirit! Liberating isn't it? What's a good program without a few bugs anyway? Big Grin | :-D

Real programmers use butterflies

Re: Is there a parser for .NET expression trees?

Sander Rossel30-Jul-20 12:08

Sander Rossel

30-Jul-20 12:08

honey the codewitch wrote:
What's a good program without a few bugs anyway?

A very short program Laugh | :laugh:

Best,
Sander

sanderrossel.com
Migrating Applications to the Cloud with Azure
arrgh.js - Bringing LINQ to JavaScript
Object-Oriented Programming in C# Succinctly

Re: Is there a parser for .NET expression trees?

Member 1402550329-Jul-20 21:59

Member 14025503

29-Jul-20 21:59

CS0030 Cannot convert type 'string' to 'System.Linq.Expressions.Expression'

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“That which can be asserted without evidence, can be dismissed without evidence.”