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Batch files - number of command line arguments
...t getargc_v0=%1
set /a "%getargc_v0% = 0"
:getargc_l0
if not x%2x==xx (
shift
set /a "%getargc_v0% = %getargc_v0% + 1"
goto :getargc_l0
)
set getargc_v0=
goto :eof
It basically iterates once over the list (which is local to the function so the shifts won...
java.lang.OutOfMemoryError: GC overhead limit exceeded [duplicate]
...
@takrl: The default setting for this option is:
java -XX:+UseConcMarkSweepGC
which means, this option is not active by default. So when you say you used the option
"+XX:UseConcMarkSweepGC"
I assume you were using this syntax:
java -XX:+UseConcMarkSweepGC
which means you w...
How to change the docker image installation directory?
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With recent versions of Docker, you would set the value of the data-root parameter to your custom path, in /etc/docker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file...
Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
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thank it solves my "SQLSTATE[HY000] [1130] Host 'DESKTOP-xxx.xx' is not allowed to connect to this MariaDB server" in containerized laravel application in windows
– Zulqarnain
Jun 11 '19 at 16:11
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What does JVM flag CMSClassUnloadingEnabled actually do?
...lt Java VM does not GC the PermGen. If you are using Java 6 or later, add -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC. UseConcMarkSweepGC is needed to enable CMSClassUnloadingEnabled."
– Aaron Digulla
Aug 19 '13 at 9:10
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Increase heap size in Java
...n Heap Size. To equalize the size of Young Gen Heap and Old Gen Heap, use -XX:NewRatio=1 -XX:-UseAdaptiveSizePolicy params.
java -jar -Xms4096M -Xmx6144M -XX:NewRatio=1 -XX:-UseAdaptiveSizePolicy pathToJarFile.jar
-XX:NewRatio = Old Gen Heap Size : Young Gen HeapSize (You can play with this ratio...
How to download image using requests
...o reasons: response.ok was never documented, and it produces true for any 1xx, 2xx or 3xx status, but only a 200 response has a response body.
– Martijn Pieters♦
Nov 23 '16 at 19:31
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How can I programmatically get the MAC address of an iphone
... wifi_info = [summary findNICInfo:@"en0"];
// you can get mac address in 'XX-XX-XX-XX-XX-XX' form
NSString* mac_address = [wifi_info getMacAddressWithSeparator:@"-"];
// ip can be multiple
if(wifi_info.nicIPInfos.count > 0)
{
NICIPInfo* ip_info = [wifi_info.nicIPInfos objectAtIndex:0];
...
Naming convention for unique constraint
...r indices and constraints:
Primary key. _PK
Unique index/constraint. _AK{xx}
Non-Unique index. _IX{xx}
Check constraint. _CK{xx}
Default constraint. _DF{xx}
Foreign key constraint. _FK{xx}
Where {xx} is a 2-digit sequence number, starting at 01 for each constraint type per table. Primary key doe...
Rebase a single Git commit
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You can cherry-pick XX to master.
git checkout master
git cherry-pick <commit ID of XX>
And remove the last commit from the feature branch with git reset.
git checkout Feature-branch
git reset --hard HEAD^
...