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What does -XX:MaxPermSize do?
...mmonly used to print a warning message like this one:
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
MaxPermSize=512m; support was removed in 8.0
The reason why you get this message in Java 8 is because Permgen has been replaced by Metaspace to address some of PermGen's drawbacks...
UITableview: How to Disable Selection for Some Rows but Not Others
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64
Starting in iOS 6, you can use
-tableView:shouldHighlightRowAtIndexPath:
If you return NO, ...
Sorting object property by values
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64
For completeness sake, this function returns sorted array of object properties:
function sortO...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...rently serial nature a problem in some application domains, and use with a 64-bit blockcipher would necessitate occasional re-keying. Cleaner than the ISO 9797-1 collection of MACs.
HMAC: A MAC based on a cryptographic hash function rather than a blockcipher (although most cryptographic hash functi...
Distinct() with lambda?
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64
@TorHaugen: Just be aware that there's a cost involved in creating all those groups. This cannot stream the input, and will end up bufferin...
Symbolic links and synced folders in Vagrant
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64
Virtualbox does not allow symlinks on shared folders for security reasons. To enable symlinks t...
Renaming columns in pandas
...eviated representation:code <class 'pandas.core.frame.DataFrame'> Int64Index: 1000 entries, 0 to 999 Data columns: BodyMarkdown 1000 non-null code works, but when i do dataframe.head() the old names for the columns re-appear.
– darKoram
Sep 10 '12...
ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
...1969061. This certainly worked for me in mariadb-server-5.5.60-1.el7_5.x86_64
– han solo
Jul 3 '19 at 6:40
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How to recover MySQL database from .myd, .myi, .frm files
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bensiu
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answered Jun 27 '12 at 10:13
alnelalnel
2...
How to get correct timestamp in C#
...unix time, but windows filetime.
From the docs:
A Windows file time is a 64-bit value that represents the number of 100-
nanosecond intervals that have elapsed since 12:00 midnight, January 1, 1601
A.D. (C.E.) Coordinated Universal Time (UTC).
...