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Stateless vs Stateful - I could use some concrete information
... many web apps are statefull beacause same sign up page gives differant results for user creditials...First time sign up will success...second time with same input signup will fail....because webapp has state of user somewhere stored...it may be database or differant storage
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...s' and I want to know how to seperate the arguments so that they are two different %s. My mind coming from Java came up with this:
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How do I read image data from a URL in Python?
...8.0. Just use Image.open(response.raw). PIL automatically checks for that now and does the BytesIO wrapping under the hood. From: pillow.readthedocs.io/en/3.0.x/releasenotes/2.8.0.html
– Vinícius M
Feb 6 at 15:21
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Divide a number by 3 without using *, /, +, -, % operators
...gt;> 2, sum);
num = add(num >> 2, num & 3);
}
if (num == 3)
sum = add(sum, 1);
return sum;
}
As Jim commented this works, because:
n = 4 * a + b
n / 3 = a + (a + b) / 3
So sum += a, n = a + b, and iterate
When a == 0 (n < 4), sum += floor(n / 3); i....
Retrieving the last record in each group - MySQL
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MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY nam...
Tutorials and libraries for OpenGL-ES games on Android [closed]
...ment I had only meant that I could not yet post urls on stackoverflow.com. Now that is no longer a problem I have removed the confusing comment, from my post. Thx for the feedback. Droidnova and the red book are problably the two main sites at which I should do my reading.
– a...
Is there a performance gain in using single quotes vs double quotes in ruby?
Do you know if using double quotes instead of single quotes in ruby decreases performance in any meaningful way in ruby 1.8 and 1.9.
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What are POD types in C++?
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There's a difference. Intrinsic types are the "builtin" language primitives. POD types are these, plus aggregations of these (and other PODs).
– Adam Wright
Sep 28 '08 at 18:44
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How to pass values between Fragments
...e that the host activity has implemented the callback interface
// If not, it throws an exception
try
{
mCallback = (OnImageClickListener) context;
}
catch (ClassCastException e)
{
throw new ClassCastException(context.toString...
How to make PDF file downloadable in HTML link?
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This code is likely dangerous in another way. If you pass HTTP links to fopen, I think it'll go retrieve the file from another server. Could be used by an attacker to attempt to scan your internal network for exposed PDF files.
– Rory McCune
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