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How to send a stacktrace to log4j?

... I never know what to stuff into the first String, usually I just end up doing log.error(e.getLocalizedMessage(), e) which is totally redundant. Does it handle a null for the first argument? – Mark Peters Dec 3 '10 at 16:52 ...
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala

...t is both commutative and associative. This means the operation can be parallelized. This distinction is very important for Big Data / MPP / distributed computing, and the entire reason why reduce even exists. The collection can be chopped up and the reduce can operate on each chunk, then the red...
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How does the main() method work in C?

...d nothing bad happens with their given compiler. This is the case if the calling conventions are such that: The calling function cleans up the arguments. The leftmost arguments are closer to the top of the stack, or to the base of the stack frame, so that spurious arguments do not invalidate the ...
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Difference between Role and GrantedAuthority in Spring Security

...thority as being a "permission" or a "right". Those "permissions" are (normally) expressed as strings (with the getAuthority() method). Those strings let you identify the permissions and let your voters decide if they grant access to something. You can grant different GrantedAuthoritys (permissions...
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How dangerous is it to access an array out of bounds?

... repeatedly accessing a single memory location in a tight loop could literally cause that chunk of memory to melt. Other possibilities include destroying a CRT display, and moving the read/write head of a disk drive with the harmonic frequency of the drive cabinet, causing it to walk across a table...
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Check if a JavaScript string is a URL

... 3limin4t0r 10.3k11 gold badge1111 silver badges3131 bronze badges answered Apr 19 '11 at 13:29 Tom GullenTom Gullen ...
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Get class that defined method

...ited Jun 20 '14 at 19:44 Aaron Hall♦ 260k6969 gold badges353353 silver badges303303 bronze badges answered Jun 7 '09 at 2:23 ...
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How do I set environment variables from Java?

... answered Aug 26 '11 at 8:17 pushypushy 8,95755 gold badges2323 silver badges4343 bronze badges ...
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RabbitMQ and relationship between channel and connection

...these concepts are not tied together. Each Consumer runs in its own thread allocated from the consumer thread pool. If multiple Consumers are subscribed to the same Queue, the broker uses round-robin to distribute the messages between them equally. See Tutorial two: "Work Queues". It is also possi...
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How to start nginx via different port(other than 80)

... | edited Apr 26 '19 at 11:27 nyedidikeke 4,51177 gold badges2929 silver badges4646 bronze badges answ...