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mmap() vs. reading blocks
...r if you know you can share it with other processes (MAP_SHARED isn't very interesting if there is no actual sharing). Read files normally if you access data sequentially or discard it after reading. And if either method makes your program less complex, do that. For many real world cases there's ...
Cell spacing in UICollectionView
...ing in a section of UICollectionView ? I know there is a property minimumInteritemSpacing I have set it to 5.0 still the spacing is not appearing 5.0. I have implemented the flowout delegate method.
...
Getting binary content in Node.js using request
...s incoming data in the content of the response as UTF-8, and automatically converts any non-UTF-8 byte sequences to junk (but valid UTF-8) characters. No amount of setting 'mimetype", etc. works (not that it's supposed to for response data). The encoding: null is the only option that works. And -...
“Prevent saving changes that require the table to be re-created” negative effects
...ll of the questions raised by the OP, and those questions are the ones I'm interested in, actually. In particular Are there any negative effects / possible drawbacks of doing this? and If so, is the table copy a 100% exact replica of the source table?. Do you have any information regarding those que...
How to drop a PostgreSQL database if there are active connections to it?
...he pid values you want to kill, then issue SELECT pg_terminate_backend(pid int) to them.
PostgreSQL 9.2 and above:
SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE pg_stat_activity.datname = 'TARGET_DB' -- ← change this to your DB
AND pid <> pg_backend_pid();...
Why is Java's boolean primitive size not defined?
..., but due to
alignment rules it may consume much
more. IMHO it is more interesting to
know that a boolean[] will consume one
byte per entry and not one bit,plus
some overhead due to alignment and for
the size field of the array. There are
graph algorithms where large fields of
bits a...
Xcode 6 Storyboard the wrong size?
... retained, and all other data will be removed. In addition, segues will be converted to their non-adaptive equivalents."
When do you use the Bridge Pattern? How is it different from Adapter pattern?
...ge pattern looks a lot like the Adapter pattern in that a class is used to convert one kind of interface to another. However, the intent of the Adapter pattern is to make one or more classes' interfaces look the same as that of a particular class. The Bridge pattern is designed to separate a class's...
Programmatically register a broadcast receiver
...kageManager.html#setComponentEnabledSetting(android.content.ComponentName, int, int)
Note if you are only interested in receiving a broadcast while you are running, it is better to use registerReceiver(). A receiver component is primarily useful for when you need to make sure your app is launched ...
Stretch and scale CSS background
... svg images independently along each axis. You may have to scale it up and convert it to a raster image.
– Mike
Dec 19 '19 at 21:24
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