...te Stopped state Starting state involves: Creating a new Linux process, allocating new memory for the new UI objects, and setting up the whole screen. So most of the work is involved here. Running state involves: It is the activity (state) that is currently on the screen. This state alone handl...

...em level operations to run this cmd, including context switching, resource allocation, etc. Note: The example assumes that your command utilizes parallelism/threads. Detailed man page: https://linux.die.net/man/1/time shar...

... generating symmetric keys, asymmetric private keys, salt values, security tokens, etc. However security-grade random numbers is a separate industry worth a separate article. In most cases Pseudo-Random Number Generator is sufficient - e.g. for scientific simulations or games. In some cases consiste...

...on of the numbers, especially a range. 2) Instead of sorting the values, allocate them to buckets based on the distribution you just calculated. The number of buckets is chosen so that the computer can handle them efficiently, but should otherwise be as large as convenient. The bucket ranges shoul...

...t(' ')[i]) for i in range(3)]))).head()" The second simply refrains from allocating 100 000 Series, and this is enough to make it around 10 times faster. But the third solution, which somewhat ironically wastes a lot of calls to str.split() (it is called once per column per row, so three times mor...

...itude ahead of Ruby, Python, PHP etc. in the more algorithmic, less memory-allocation-intensive benchmarks above) Ruby method calls are slow (although, because of duck typing, they are arguably faster than in strongly typed interpreted languages) Ruby (with the exception of JRuby) does not support t...

... Semaphores are good for producer/consumer situations where producers are allocating resources and consumers are consuming them. Think about if you had a soda vending machine. There's only one soda machine and it's a shared resource. You have one thread that's a vendor (producer) who is responsi...

...ptional arguments" with getopts. The parser simply cannot know if the next token is an argument to the current option or an option by itself since -p might be the intended value. You can hack around this if you absolutely know that an option parameter cannot look like another valid option, yes, but ...

...ring via ToString(). Then the total length is computed and only one string allocated (with the total length). Finally, each string is copied into the resulting string via wstrcpy in some unsafe piece of code. Reasons String.Concat is way faster? Well, we can all have a look what String.Format is do...

...throws; 3) you don't actually need the new instance, so you have a useless allocation. The accepted answer is better (though not perfect). – Marcel Popescu Dec 7 '17 at 19:37 ...