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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...t buffer, so you do want to cache it instead of doing this operation every time you need to get pixel values)
See below as a sample:
// First get the image into your data buffer
CGImageRef image = [myUIImage CGImage];
NSUInteger width = CGImageGetWidth(image);
NSUInteger height = CGImageGetHeight(...
How should equals and hashcode be implemented when using JPA and Hibernate
...utes that is not going to change during object (or, at least, session) lifetime.
If the above is impossible, base equals() / hashCode() on primary key IF it's set and object identity / System.identityHashCode() otherwise. The important part here is that you need to reload your Set after new entity h...
What does it mean to inflate a view from an xml file?
...e, but when you call setContentView or manually inflate the layout. By the time you call findViewById the view objects are already in memory, and the only reason you do so is to get a reference to that particular object (either to change it or get data out of it).
– Cristian
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What are the differences between struct and class in C++?
This question was already asked in the context of C#/.Net .
30 Answers
30
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Why does the C# compiler go mad on this nested LINQ query?
... compiler takes >3 GB of RAM (all free memory on my machine) and very long time to compile (actually I get IO exception after 10 minutes).
...
std::shared_ptr of this
I am currently trying to learn how to use smart pointers. However while doing some experiments I discovered the following situation for which I could not find a satifying solution:
...
Executing an EXE file using a PowerShell script
I'm trying to execute an EXE file using a PowerShell script. If I use the command line it works without a problem (first I supply the name of the executable and series of parameters to invoke it):
...
Stop and Start a service via batch or cmd file?
...ice Cannot Accept Control
- 6 = Service Not Active
- 7 = Service Request Timeout
- 8 = Unknown Failure
- 9 = Path Not Found
- 10 = Service Already Running
- 11 = Service Database Locked
- 12 = Service Dependency Deleted
- 13 = Service Dependency Failure
- 14 = Service Disabled
- 15 = Servi...
How to retrieve inserted id after inserting row in SQLite using Python?
...t'))
print(cursor.lastrowid)
# 1
If two people are inserting at the same time, as long as they are using different cursors, cursor.lastrowid will return the id for the last row that cursor inserted:
cursor.execute('INSERT INTO foo (username,password) VALUES (?,?)',
('blah','blah'))...
Pass complex parameters to [Theory]
...to have an iterator method that can actually calculate test cases one at a time, yielding them up as they're computed.)
Each element in the sequence returned by the enumerator is an object[] and each array must be the same length and that length must be the number of arguments to your test case (an...