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appJar is a cross-platform Python library for developing GUIs (graphical user interfaces). [3] It can run on Linux , OS X , and Windows . It was conceived, and continues to be developed with educational use as its focus, [ 4 ] so is accompanied by comprehensive documentation, as well as easy-to-follow lessons.
A follow-up paper by Kogan and Petrank [20] provided a method for making wait-free algorithms fast and used this method to make the wait-free queue practically as fast as its lock-free counterpart. A subsequent paper by Timnat and Petrank [21] provided an automatic mechanism for generating wait-free data structures from lock-free ones. Thus ...
A wait-for graph in computer science is a directed graph used for deadlock detection in operating systems and relational database systems.. In computer science, a system that allows concurrent operation of multiple processes and locking of resources and which does not provide mechanisms to avoid or prevent deadlock must support a mechanism to detect deadlocks and an algorithm for recovering ...
An example is "blocking on a channel" where passively waiting for the other part (i.e. no polling or spin loop) is part of the semantics of channels. [3] Correctly engineered, any of these may be used to implement reactive systems. [clarification needed] Deadlock means that processes pathologically wait for each other in a circle. As such it is ...
In computer science and software engineering, busy-waiting, busy-looping or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as whether keyboard input or a lock is available. Spinning can also be used to generate an arbitrary time delay, a technique that was necessary on systems that lacked a ...
You might try to pry a jar open with a knife or run it under hot water, but there's actually much simpler way to open a stuck jar lid. Using the handle of a butter knife, simply tap four times ...
Place the jar on the counter and try easing the tip of a butter knife between the jar and the lid. This will create a wedge to help pop the seal. Once it's in there, give the lid a twist to help ...
No blocking (left) vs blocking (right) experimental design. When studying probability theory the blocks method consists of splitting a sample into blocks (groups) separated by smaller subblocks so that the blocks can be considered almost independent. [5] The blocks method helps proving limit theorems in the case of dependent random variables.