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MySQL: Set user variable from result of query
...FROM user WHERE user = @user;
SELECT * FROM user WHERE `group` = @group;
Test case:
CREATE TABLE user (`user` int, `group` int);
INSERT INTO user VALUES (123456, 5);
INSERT INTO user VALUES (111111, 5);
Result:
SET @user := 123456;
SELECT @group := `group` FROM user WHERE user = @user;
SELECT ...
How to negate the whole regex?
...t the end are both critical bits. As always with REs, a strong set of unit tests is absolutely critical to getting it right. This answer is 100% correct.
– Tom Dibble
Aug 7 '18 at 19:30
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What's the difference between “static” and “static inline” function?
...t have that information readily available and don't have time to setup and test lots of gcc versions at the moment, but I agree it would be useful information to have. You could probably find when gcc first started optimizing out unused static functions/objects by looking at the history of attribute...
Why is my Spring @Autowired field null?
... // TODO Auto-generated method stub
System.out.println("test");
ApplicationContext ctx=new ClassPathXmlApplicationContext("spring.xml");
System.out.println("ctx>>"+ctx);
Customer c1=null;
MyDemo myDemo=ctx.getBean(MyDemo.class...
How to select a node using XPath if sibling node has a specific value?
...-sibling XPath axis
//a/bb[text()="zz"]/following-sibling::cc[1]/text()
Test the Xpath here: http://www.xpathtester.com/obj/b55ec3ac-dfa4-4f44-81e8-f963ea4a0625
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Is BCrypt a good hashing algorithm to use in C#? Where can I find it? [closed]
...much more sense to use Argon2 these days anyway, for which there is a well-tested C# library
– Polynomial
Jan 2 '17 at 21:43
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SQLite add Primary Key
...eger,j integer,t text,primary key(i,j))' WHERE name='tab1';
COMMIT;
Some tests (in sqlite shell):
sqlite> explain query plan select * from tab1 order by i,j;
0|0|0|SCAN TABLE tab1 USING INDEX sqlite_autoindex_tab1_1
sqlite> drop index sqlite_autoindex_tab1_1;
Error: index associated with UN...
invalid target release: 1.7
...ion 2503658 and the use of the $JAVACMD variable might help but I haven't tested it myself.
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Default string initialization: NULL or Empty? [closed]
...lid values will make your code easier to understand. This is why I always test booleans with "if (var)," pointers with "if (var != NULL)" and integers with "if (var != 0)" -- they all mean the same thing to the compiler, but they carry additional information that helps the poor developer who mainta...
How to run Node.js as a background process and never die?
...en or tmux session is an AMATEUR solution! Don't do that, unless for quick tests. To keep a process running you need to daemonize it! Use proper tools for it, like forever, pm2 or the plain old init.d scripts.
– Victor Schröder
Mar 16 '16 at 9:28
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