c++ - .c vs .cc vs. .cpp vs .hpp vs .h vs .cxx - Stack Overflow
Historically, the first extensions used for C++ were .c and .h, exactly like for C.This caused practical problems, especially the .c which didn't allow build systems to easily differentiate C++ …
Regular Expression to validate xx-xxxxxxx or xxx-xx-xxxx
2014年9月26日 · string1 = xxx-xx-xxxx. or . string1 = xx-xxxxxxx . How can I make the regex accept both kinds of values for the same element? The x's represent numbers only. so total …
Difference between -XX:+UseParallelGC and -XX:+UseParNewGC
2020年5月19日 · Using -XX:+UseParNewGC along with -XX:+UseConcMarkSweepGC, will cause higher pause time for Minor GCs, when compared to -XX:+UseParallelGC. This is because, …
How can I format a number as xxx-xx-xxxx? - Stack Overflow
2017年3月27日 · I am querying social security number data from a stored procedure and I would like to format it as a social security number in my stored procedure. How can I format …
Difference between Xms and Xmx and XX:MaxPermSize
-XX:MaxPermSize=size Sets the maximum permanent generation space size. This option was deprecated in JDK 8, and superseded by the -XX:MaxMetaspaceSize option. Sizes are …
Increase heap size in Java - Stack Overflow
2016年3月22日 · -XX:MaxRAMPercentage=percent. The MaxRAMPercentage parameter allows setting the maximum heap size for a JVM running with a large amount of memory (greater …
What are the -Xms and -Xmx parameters when starting JVM?
2013年2月7日 · The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool.
Is -XX:+UseG1GC the correct replacement for -Xincgc?
2015年11月25日 · Unfortunately, when searching for Java tuning pages on the Web, there are many documents that recommend the use of CMS in incremental mode by setting one of the …
Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
The message *Host ''xxx.xx.xxx.xxx'' is not allowed to connect to this MySQL server is a reply from the MySQL server to the MySQL client. Notice how its returning the IP address and not …
selenium - How facebook change CDN url onclick on Facebook …
2020年11月19日 · Facebook Page messenger or Chat is different than Facebook general messenger at least how it handles attachments. Unfortunately Facebook doesn't provide any …