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Convert seconds value to hours minutes seconds?
...l variable) to a string in an editText like "1 hour 22 minutes 33 seconds" or something of the kind.
21 Answers
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Send email using java
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The following code works very well with Google SMTP server. You need to supply your Google username and password.
import com.sun.mail.smtp.SMTPTransport;
import java.security.Security;
import java.util.Date;
import java.util.Properties;
import ...
Take diff of two vertical opened windows in Vim
...l mode, next to next. Can I instantly diff these two files without leaving or closing Vim ?
4 Answers
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List All Redis Databases
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There is no command to do it (like you would do it with MySQL for instance). The number of Redis databases is fixed, and set in the configuration file. By default, you have 16 databases. Each database is identified by a number (not a name).
You can use the following command to know the ...
How can I decompress a gzip stream with zlib?
Gzip format files (created with the gzip program, for example) use the "deflate" compression algorithm, which is the same compression algorithm as what zlib uses. However, when using zlib to inflate a gzip compressed file, the library returns a Z_DATA_ERROR .
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Split string on the first white space occurrence
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If you only care about the space character (and not tabs or other whitespace characters) and only care about everything before the first space and everything after the first space, you can do it without a regular expression like this:
str.substr(0,str.indexOf(' ')); // "72"
str.su...
Exact time measurement for performance testing [duplicate]
What is the most exact way of seeing how long something, for example a method call, took in code?
7 Answers
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How is Racket different from Scheme?
... descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or is just different?
6 Answers
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Create a GUID in Java
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Have a look at the UUID class bundled with Java 5 and later.
For example:
If you want a random UUID you can use the randomUUID method.
If you want a UUID initialized to a specific value you can use the UUID constructor or the fromString method.
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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query
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Use keyword VALUES to refer to new values (see documentation).
INSERT INTO beautiful (name, age)
VALUES
('Helen', 24),
('Katrina', 21),
('Samia', 22),
('Hui Ling', 25),
('Yumie', 29)
ON DUPLICATE KEY UPDATE
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