|
Actually there is no such optimization...
This:
string s1 = "";
string s2 = string.Empty;
Will compile to this:
IL_0001: ldstr ""
IL_0006: stloc.0
IL_0007: ldsfld string [mscorlib]System.String::Empty
IL_000c: stloc.1
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
|
|
|
|
|
Too bad. It would have been really useful. What does the disassembly after the JIT is finished look like?
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
|
|
|
|
|
There you go!
string s1 = ""
00352D49 mov eax,dword ptr ds:[32522C0h]
00352D4F mov dword ptr [ebp-40h],eax
string s2 = string.Empty
00352D52 mov eax,dword ptr ds:[32522C0h]
00352D58 mov dword ptr [ebp-44h],eax
However it would be time-saving to optimize it while compiling...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
|
|
|
|
|
Well, at least we have this. Now I wonder if that also works with any string constant you define and literal strings.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
|
|
|
|
|
Strings (constants) has a queue (poll?) to save space...
IL_0001: ldstr "CDP1802"
IL_0006: stloc.0
IL_0007: ldstr "CDP1802"
IL_000c: stloc.1
string s1 = "CDP1802"
001D2DD1 mov eax,dword ptr ds:[30D232Ch]
001D2DD7 mov dword ptr [ebp-40h],eax
string s2 = "CDP1802"
001D2DDA mov eax,dword ptr ds:[30D232Ch]
001D2DE0 mov dword ptr [ebp-44h],eax
Still a JIT optimization...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
|
|
|
|
|
Kornfeld Eliyahu Peter wrote: Still a JIT optimization...
That makes sense, like the old C/C++ compilers, it strips away all high level language features and cuts some corners.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
|
|
|
|
|
Yeah, I'm totally with you.
Throughout my career I've worked with people who thought all code should look the same no matter who wrote it.
(Real life) example:
"We don't do interfaces here."
"But... That's just good and common practice!"
"All code must look the same so you can't just go and make an interface because we will know you wrote it."
I'm all for change and discussion.
If something is good let's do it, if something is not then don't.
That's how we can learn from each other.
I think the best argument for guidelines is that some programmers aren't all that great and make the worst code ever if they don't have some guidelines.
We have the guideline "functions can't be over 20 lines", an arbitrary number, to prevent people from writing 1000 line functions (yes, literally) 
Our code improved since we talked about it and agreed on the guideline (they're still larger than 20, but at least not 1000) 
|
|
|
|
|
Of course we can't all simply do what we like if we want our work to fit together, but no bloated rulebook with (literally) hundreds of 'rules' and 'conventions' for and against everything, plus 'code reviews' which do little more than nitpicking over these rules (with different interpretations of the rules, depending on the reviewer) and endless discussions about some new rules which someone wants to add, just to cover some more special cases.
I have been in a place where they really went overboard with this and we were going nowhere mighty fast. Despite all the time and work put into this, the code was still as disfunctional as before. There were too many fundamental flaws that no obscession with 'cosmetics' could ever solve. As if lipstick on a pig ever solved anything.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
|
|
|
|
|
CDP1802 wrote: As if lipstick on a pig ever solved anything.
So long in business and don't know yet, that you should use silk on a monkey?
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
|
|
|
|
|
Sander Rossel wrote: But using string.Empty instead of "" is actually a useful memory optimization!
If it were the case, I'd prefer to waste some memory and have readable code.
Your brain processes "" faster than string.Empty.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
|
|
|
|
|
Sander Rossel wrote: But using string.Empty instead of "" is actually a useful memory optimization!
It does not have effect on memory consumption due to string interning.
The main reason I use string.Empty is that var foo = "" looks ugly to me.
|
|
|
|
|
Yeah, but "" still needs to create an object, while string.Empty doesn't.
At least that's what I always understood
Anyway, the gain, if any, is negligible.
I prefer string.Empty, because that's what I've been taught and because Microsoft recommend(ed?) it
|
|
|
|
|
Strictly speaking, you're right, the line obviously can lead to that exception, but ultimately the problem lies with whatever other lines of code that follow (and you've omitted) that blindly assumes the string wasn't empty.
Or are you claiming the exception is thrown on the assignment itself?  In which case, yeah, time to take VS behind the tool shed with a shotgun...
|
|
|
|
|
VS says the exception occurs on that line. About a million times. Well, every time that function gets called, anyway.
Code following it is just an if/else, do THIS if it's not empty, do THAT if it is. (I don't have the actual code handy...it's at home, and I'm at work.)
The program works as expected, if I tell it to ignore those exceptions, of course. (Which is the default, apparently, in VS. I guess they already know it's bogus.  )
The only reason I even knew about it was the continuous line of little red diamonds in the running monitor (whatever it's really called. The part that shows memory use, etc.)
|
|
|
|
|
|
Was more of a TV Flash news when the election winner was announced. But it has taken its time to come around & hit the target somewhere else that nobody predicted it would happen so soon.
Now some of my friends are becoming victims of these[^]
May be Trump should have done a more balanced schemes than affecting so many families in India all of a sudden. 
Starting to think people post kid pics in their profiles because that was the last time they were cute - Jeremy.
|
|
|
|
|
And our blatantly lying IT Minister : Job losses in IT sector are exaggerated: Prasad | Business Standard News[^]
Layoffs are being processed on the name of 'newer technologies'. Unfortunately,here in India,90% people doesn't know as to why new tech should be used/implemented. Every company needs a 'superman'.
Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning
modified 24-May-17 2:02am.
|
|
|
|
|
Bit soapbox but I'll bite:
"Indians do not steal jobs, but rather create new jobs. Indian IT companies have created as many 400,000 jobs abroad..."
that's the people needed people to fix the shite these guys put out...
|
|
|
|
|
We didn't need to hire to fix the made-in-India software. It was tossed out for the junk it was.
Then they got more (there's a special depth in hell for management) - and that took months to make even usable (not my job, this time).
One of the problems: all the "textbook quality" development is just that. So in the real world it falls flat because textbook solutions are only idealized. And they can be created by another application, anyway - so the drones aren't needed.
This is not to say there are no good excellent developers in India! But when you outsource to a mill you get mill-work.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
|
|
|
|
|
Yeah I am sorry, but a disagree. STRONGLY!
The indian low cost outsourcing triggered a race to the bottom.
I don't know how it is in the US, but here in Canada there are many indian companies with a small sales office in Canada and a huge development team in India.
These guys dump on the IT market first and then do not deliver. I get routinely spammed by them with some offers about 3 to 6 months contracts to fix their crap.
I want them all, those companies to go away. Good riddance.
modified 20-Oct-19 21:02pm.
|
|
|
|
|
Yeah how stupid it is to say, "Automation took your job in couple of days".
They are completely patching it up with ridiculous reasons heaping all buzz words together. AI, Automation, Robotics & all blah blah behind your lost job. All these happen in a week?
Starting to think people post kid pics in their profiles because that was the last time they were cute - Jeremy.
|
|
|
|
|
Vunic wrote: All these happen in a week?
You would be surprised what can be done in just one day
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
|
|
|
|
|
I'm talking about the Robots paratrooping into the field and firing employees in a week. It should be a gradual process done over a period of time.
Starting to think people post kid pics in their profiles because that was the last time they were cute - Jeremy.
|
|
|
|
|
And I am talking about saying "bank notes of XXX" are not valid anymore from one day to the next.
If the ones in charge don't give a ----- (censored, we are not in the soapbox) about the people... what is so surprising?
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
|
|
|
|
|
Correct. And they go on increasing Govt. pay scale tossing up the parity in society between Govt & private workers. But the crap all happened because of this so called instant Indian IT boom that started in late 1990s. IT pays were so high & everyone started buying Flats,properties & switched to lavish life style. This kicked up the inflation fixing ridiculous price tags on anything in the city. Govt took steps to maintain the parity with Govt employees. 5th pay commission, 6th, 7th & so on. Now the lowest possible class worker in Govt sector is getting paid better than a so called mid level "techie" in IT. And the bubble is just burst they are gonna get pushed to the 1990's salaries. But Govt is all up to announce the next pay commission. Well done!
Starting to think people post kid pics in their profiles because that was the last time they were cute - Jeremy.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
