摘要：this passage is referenced, appreciated. ZooKeeper installation: to share my_data between clients.. create /zk_test my_dataget /zk_testdelete /zk_test 阅读全文

摘要：gcc -I -L -l -D -g -O -o -Wall about the -0 option.. ref to the following table.. Set the compiler's optimization level. +increase ++increase more +++ 阅读全文

摘要：/* Defines COUNTER. There must be exactly one such definition at file scope * within a program. */ #define COVERAGE_DEFINE(COUNTER) \ DEFINE_STATIC_PE... 阅读全文

摘要：CURL usage.. -v, -m, -H, -I, -s, --connect-timeout, -x, -X GET|POST, -d, -T, -o. --retry, -u curl [options] [uri] 阅读全文

摘要：found this page.. already done by precedents.. installation: searching.. update db & upgrade.. install dependencies.. getting source code: remove sing 阅读全文

摘要：A usual IA includes these parts: the first line includes asm [volatile], it means the contents in the following parenthesis is IA. the AssblerTemplate 阅读全文

摘要：something new: to set value in struct can be in case i cannot view picture.. i write the snippet here .. the dot punctuation means the member of the s 阅读全文

摘要：reference sign & use predefine in c, but const in c++ 阅读全文

摘要：journalctl -t ovs-vswitchd ovs-vsctl show ovs-ofctl show br0 set vlanid ovs-vsctl set port eth0 tag=100 阅读全文

摘要：Using Vim.. Python programing seems easier because YCM helps presenting all the arguments required in its order.. But there's one more problem that's 阅读全文

摘要：instead of print(x) to escape the default line-changing-output. print(str.ljust(size)) left-alignment with given size, samely, str.rjust(size) works j 阅读全文

摘要：recursively add folder Document to archive: (with all the files) recursively add folders to archive: (with all the files) add path etc to certain file 阅读全文

摘要：in .cpp file, wherever you want, wrap QString with a tr("somesz") rendering it ready to be translated. in .pro file, specify the readable translation 阅读全文

摘要：I used to load library using 1 single .dll file, so when I happen to do method calling between 2 projects in a solution, I got puzzled.. In the soluti 阅读全文

摘要：In Java, byte = 8 bit, char = 16 bit In C/C++, char = 8 bit There is difference because Java uses Unicode, however C uses ASCII as basic character col 阅读全文

摘要：To prevent Memory Consistency Errors(MCEs), it is good practice to specify synchronized class specifier, and mark all the related methods as synchroni 阅读全文

摘要：In Java, the main process can have several threads at a time, but only a few of them can run concurrently, so it is needed to cancel some thread at ti 阅读全文

摘要：Files.probeContentType() is an instance of FileTypeDetector class's abstract method String FileTypeDetector.probeContentType(), it's an extension base 阅读全文

摘要：A file's status is 3-valued: So !Files.exists(path) != Files.notExists(path). If both exists and notExists return false, the existence of the file can 阅读全文

摘要：Using BigDecimal to perform precise calculations with floats. BigDecimal is a class type. So declare/construct one BigDecimal is in the form like: Do 阅读全文