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List distinct values in a vector in R
... applied to a factor) is that levels will return a character vector in the order of levels, including any levels that are coded but do not occur. unique will return a factor in the order the values first appear, with any non-occurring levels omitted (though still included in levels of the returned f...
HQL ERROR: Path expected for join
...ct u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN ug.user u WHERE ug.group_id = :groupId ORDER BY u.lastname"
)
Use paths in t...
How to run Conda?
...t PATH=~/anaconda3/bin:$PATH works but stops when you exit the terminal in order change that you have to run sudo nano ~/.bashrc and then copy the path into the file and save it after that you activate the changes using source .bashrc.
check with conda install anaconda-navigator
if not installed f...
Oracle find a constraint
...
AND uc.constraint_type = 'R'
AND uc.constraint_name = 'SYS_C00381400'
ORDER BY ucc1.TABLE_NAME ,
uc.constraint_name;
From here.
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Linq 多字段排序，二次排序 - .NET(C#) - 清泛IT论坛，有思想、有深度
Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );
类似SQL：select * from t1 order by f1 desc ,f2 asc
这种写法里 OrderBy、ThenBy 是升序的，OrderByDescending、ThenByDescending 是降序的。
Identify duplicates in a List
...s 3 years later, but why a LinkedHashedSet, i.e. why do you care about the order?
– Ahmad Ragab
Feb 18 '16 at 22:39
4
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
...
To get MD5 value and SHA1...etc fallow this below:
Before this dont forget to copy the debug.keystore to a folder Androidkeystore like that created in C drive.
C:\Program Files\Java\jdk1.7.0_05\bin>keytool -v -list -keystore C:\Androidkeyst
ore\deb...
解决：error while loading shared libraries: libpcre.so.1: cannot open ...
...件的位置（可以使用命令 whereis xxx ），并把目录添加到/etc/ld.so.conf.d/libc.conf中，没有则新建这个文件。然后再运行ldconfig才可以生效。
解决：用以下shell命令解决：（用root用户）
echo "/usr/local/lib" >> /etc/ld.so.conf.d/libc.conf
sudo...
What is the fastest substring search algorithm?
...tacker who wants to exploit worst-case performance to cripple your system? Etc..
– R.. GitHub STOP HELPING ICE
Jul 7 '10 at 5:46
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Implement Stack using Two Queues
... 3 2 1 in Queue A? If I dequeue B to enqueue A, I can only get elements in order 2, 1. If I then add 3, I will get the order 3, 1, 2. If put my push first, and then dequeue/enqueue, I get 1, 2, 3.
– tsurantino
Sep 11 '15 at 3:56
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