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Modify request parameter with servlet filter
...d from this thread pool will process many HTTP requests, but only one at a time (so you need either to cleanup you variable after usage or to define it for each HTTP request = pay attention to code such as if (value!=null) { THREAD_VARIABLE.set(value);} because you will reuse the value from the prev...
What is the difference between Pan and Swipe in iOS?
...nslational movement and continues to report movement in any direction over time, while a swipe recognizer makes an instantaneous decision as to whether the user's touches moved linearly in the required direction.
By default, no two recognizers will recognize the same gesture, so there's a conflict...
how to set “camera position” for 3d plots using python/matplotlib?
I'm learning how to use mplot3d to produce nice plots of 3d data and I'm pretty happy so far. What I am trying to do at the moment is a little animation of a rotating surface. For that purpose, I need to set a camera position for the 3D projection. I guess this must be possible since a surface can b...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
After this comment to one of my question, I'm thinking if it is better using one database with X schemas or vice versa.
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Should I use #define, enum or const?
...amespace.
namespace RecordType {
An enum declares and defines a compile time checked typed. Always use compile time type checking to make sure arguments and variables are given the correct type. There is no need for the typedef in C++.
enum TRecordType { xNew = 1, xDeleted = 2, xModified = 4, xE...
Are class names in CSS selectors case sensitive?
I keep reading everywhere that CSS is not case sensitive, but I have this selector
4 Answers
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Understanding dispatch_async
... things won't necessarily FINISH executing in order depending on length of time for each task.
As per Apple:
https://developer.apple.com/library/content/documentation/General/Conceptual/ConcurrencyProgrammingGuide/OperationQueues/OperationQueues.html
A concurrent dispatch queue is useful when...
Detect all Firefox versions in JS
...l versions of Firefox, for Desktop, from version 1 to 46.
It's the third time I've tried to answer this question on StackOverflow because I kept finding new ways to break my script. However, I think it's working now. It's a great exercise to learn about Firefox features and interesting to see how ...
How do I capture the output into a variable from an external process in PowerShell?
... @Atique I ran into the same issue. Turns out that ffmpeg will sometimes write to stderr instead of stdout if, for example, you use the -i option without specifying an output file. Redirecting the output using 2>&1 as described in some of the other answers is the solution.
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Evenly space multiple views within a container view
...ing to be really useful when I switched, but I seem to fight it all of the time.
29 Answers
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