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xx    
b.不可分离

b.不可分离

xx
adj 1: denoting a quantity consisting of 20 items or units [synonym:
{twenty}, {20}, {xx}]
n 1: the cardinal number that is the sum of nineteen and one
[synonym: {twenty}, {20}, {XX}]
2: (genetics) normal complement of sex chromosomes in a female



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  • 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++ and C files
  • 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    -XX:MaxPermSize=size Sets the maximum permanent generation space size This option was deprecated in JDK 8, and superseded by the -XX:MaxMetaspaceSize option Sizes are expressed in bytes Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, g or G to indicate gigabytes References: How is the java memory pool divided?
  • Regular Expression to validate xx-xxxxxxx or xxx-xx-xxxx
    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 number of digits = 9 (anything between 0-9) total number of elements in the value is either 11 or 10 depending on which format and total number of dashes is either 2 or 1
  • Decoding facebooks blob video url - Stack Overflow
    I found blob:https: www facebook com c7e5a634-2343-4464-a03e-4a1987301ca1 video source on Facebook's private group and I really can't download the video by entering
  • Validation for xxx-xxx-xxxx or (xxx)xxx-xxxx - Stack Overflow
    Possible Duplicate: A comprehensive regex for phone number validation Whats the regex for xxx-xxx-xxxx or (xxx)xxx-xxxx I can create regex for the first one with ^\d{3}-\d{3}-\d{4}$ but how
  • What are the -Xms and -Xmx parameters when starting JVM?
    The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool
  • Increase heap size in Java - Stack Overflow
    -XX:MaxRAMPercentage=percent The MaxRAMPercentage parameter allows setting the maximum heap size for a JVM running with a large amount of memory (greater than 200 MB) This is the option that can be used for the case mentioned in the question:-XX:MaxRAMPercentage=75 -XX:MinRAMPercentage=percent
  • Is -XX:+UseG1GC the correct replacement for -Xincgc?
    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 command-line switches-XX:+CMSIncrementalMode or -Xincgc
  • java - Where dump is dumped, using . . . - Stack Overflow
    I found it hard to decipher what is meant by "working directory of the VM" In my example, I was using the Java Service Wrapper program to execute a jar - the dump files were created in the directory where I had placed the wrapper program, e g c:\myapp\bin
  • How to extract the direct facebook video url - Stack Overflow
    Well i have not tried this in PHP, as per the facebook they have removed option in API to return source for the video, so i got it working using Python ;)





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