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How does database indexing work? [closed]
...a section for data, a pointer to the location of the next node (or block), and both need not be stored contiguously.
Due to the fact that a number of records can only be sorted on one field, we can state that searching on a field that isn’t sorted requires a Linear Search which requires N/2 block...
What are the minimum margins most printers can handle?
...ng real estate is a must but at the same time ensuring users printers can handle the tight margins is a must.
5 Answers
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Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
I have been involved in some debate with respect to libraries in Linux, and would like to confirm some things.
4 Answers
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Why does struct alignment depend on whether a field type is primitive or user-defined?
...ot supposed to happen.
You can see it by making the struct members public and appending test code like this:
var test = new RefAndTwoInt32Wrappers();
test.text = "adsf";
test.x.x = 0x11111111;
test.y.x = 0x22222222;
Console.ReadLine(); // <=== Breakpoint here
When the...
HTTP vs HTTPS performance
Are there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it?
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git update-index --assume-unchanged returns “fatal unable to mark file”
I am having the same problem as the OP on this post, but I don't understand the answer marked as correct (I don't see that it explains how to fix the situation)
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Difference between author and committer in Git?
... is the person who originally wrote the code. The committer, on the other hand, is assumed to be the person who committed the code on behalf of the original author. This is important in Git because Git allows you to rewrite history, or apply patches on behalf of another person. The FREE online Pro G...
How to validate an Email in PHP?
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You can use the filter_var() function, which gives you a lot of handy validation and sanitization options.
filter_var($email, FILTER_VALIDATE_EMAIL)
PHP Manual filter_var()
Available in PHP >= 5.2.0
If you don't want to change your code that relied on your function, just do:
func...
Why are there no ++ and -- operators in Python?
Why are there no ++ and -- operators in Python?
19 Answers
19
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Android Shared preferences for creating one time activity (example) [closed]
I have three activities A,B and C where A and B are forms and after filling and saving the form data in database(SQLITE). I am using intent from A to B and then B to C.What i want is that every time I open my app I want C as my home screen and not A and B anymore.
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