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Why malloc+memset is slower than calloc?
..., if you allocate 16 bytes, malloc() will first try to get 16 bytes out of one of its pools, and then ask for more memory from the kernel when the pool runs dry. However, since the program you're asking about is allocating for a large amount of memory at once, malloc() and calloc() will just ask fo...
When do you use map vs flatMap in RxJava?
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map transform one event to another.
flatMap transform one event to zero or more event. (this is taken from IntroToRx)
As you want to transform your json to an object, using map should be enough.
Dealing with the FileNotFoundException is ...
What do linkers do?
... (an executable file is a file that can be executed on your machine or someone else's machine running the same machine architecture).
Under the hood, when a program is compiled, the compiler converts the source file into object byte code. This byte code (sometimes called object code) is mnemonic i...
How do you share constants in NodeJS modules?
...utability of the destructured variable, not the const in foo.js. That is, one can use let {FOO} = in bar.js and mutate the "constant" variable. AFAIK, to enforce immutability of exports, one still needs either ES modules or Object.freeze.
– Spain Train
Aug 11...
How do you find the sum of all the numbers in an array in Java?
... edited Mar 17 '18 at 16:04
OneCricketeer
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answered Jul 24 '13 at 23:08
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Why does Unicorn need to be deployed together with Nginx?
..., nginx will buffer it from (and spoon feed to) the client. Without nginx, one of your unicorns will be tied up during uploads/downloads.
– BraveNewCurrency
Jul 22 '13 at 1:34
10
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How to use ConcurrentLinkedQueue?
...d about concurrency in the queue? Or do I just have to define two methods (one to retrive elements from the list and another to add elements to the list)?
Note: obviously these two methods have to be synchronized. Right?
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how to access iFrame parent page using jquery?
... the thanks before he thanked you. StackOverflow having problems with timezones maybe?
– belugabob
Mar 19 '10 at 8:49
23
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How to get a list of user accounts using the command line in MySQL?
...er' and host='somehost'; If you do DELETE FROM mysql.user;, all users are gone. Logins after the next mysql restart or FLUSH PRIVILEGES; eliminate users from memory. Here is an example of one of my posts on doing DELETE FROM mysql.user responsibly : dba.stackexchange.com/questions/4614/…
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What is global::?
...hing I have ever used myself so I don't know what the purpose is. Can someone explain this?
4 Answers
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