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My code was converted to these random characters at some point after I saved my program using Vi. I did this project for a grade in one of my college courses and didn’t get any credit, despite the fact that I spent hours working on my code for this to happen. If anyone knows how to convert it back to C++ I would be thankful.
Turns out I had saved my file under the wrong folder and I was able to recover my original file. Thanks to all for helping out with this! It seems like it always tends to be something so simple...
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This is used here do {....} while(ch!=?.?); what does ch!=?.? mean here can anybody please help with it.
It's a syntax error with both clang and gcc.
#JonathanLeffler is usually right and I think he nailed the root cause. I used to see this when text was being copied from Microsoft Word to the web (lack of transcode from a Windows code page to ascii/utf8?).
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Why am I getting this problem and how can I fix it? From my point of view I already declared it. Please see the image.
Thanks a lot!
You have an extra semicolon between the for statement and opening brace. That makes the for loop have an empty body, and the braced expressions have no idea what angle is supposed to be, since it truly is out-of-scope.
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I think I saw something on using this to truncate test as a filter, but I've seen to no idea how to use it. Using as xx|do_trucate(20) gives the following:
TemplateAssertionError: no filter named 'do_truncate'
What is the correct usage?
Doh, from the spec I saw
do_trucate
http://code.nabla.net/doc/jinja2/api/jinja2/jinja2.filters.html
But in reality, its just truncate
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double testpower;
testpower = pow(400,-9);
testpower giving me 3.8146972656250003e-024 which is different calculator output of 4E-7
Anyone have any idea why??
calculator output of 4E-7
You entered the wrong calculation into your calculator.
You entered 400×10-9, instead of 400-9.
These are absolutely not the same thing!
The C++ program is correct: pow(400, -9) calculates 400-9, which is approximately 3.815×10-24.
Here is some further reading for you:
http://en.wikipedia.org/wiki/Scientific_notation#E_notation
4E-7 seems like you accidentally input 400 * 10^-9 or 400E-9.
You're looking for 400^-9, which should give 3.8146972656250003e-024.
The result you are getting 3.8146972656250003e-024 is completely correct. Maybe your calculator does not have that precission and that is why you are getting that error. Try to do 1/400^9.
I just tested 400^(-9) on the Windows calculator tool and I got the same output as your program. I think the program is fine, it may be your manual calculation that is the problem here.
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I am loading a Gdk.Pixbuf from bytes:
_pixbuf = new Gdk.Pixbuf(bytes);
Then, I'd like to read the _pixbuf data. But, it appears that the data is actually loading in the background because the data doesn't exist for a while. If I wait, all is fine.
How can I either know when it is finished, or force the update?
It turns out that this code was fine... I was executing it in the graphics thread, and returning before it was done. Once I executed it so that it blocked until it was complete, then all was fine.