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What is the difference between “expose” and “publish” in Docker?
...orts without exposing them. I tried that. The catch here is that container IP address is unpredictable. I believe that link is used to specify which container you want to connect (so you link to specific container IP), not to enable connection.
– Jiri
Mar 4 '14...
The tilde operator in C
... operator. It inverts the bits of the operand.
For example, if you have:
char b = 0xF0; /* Bits are 11110000 */
char c = ~b; /* Bits are 00001111 */
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Can I concatenate multiple MySQL rows into one field?
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If you want to sort hobbies in the resulting imploded string use: SELECT person_id, GROUP_CONCAT(hobbies ORDER BY hobbies ASC SEPARATOR ', ') FROM peoples_hobbies GROUP BY person_id
– Jan
Mar 8 '17 at 15:38
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How big can a user agent string get?
... the UserAgent auto-increment primary key field
Store the actual UserAgent string in a TEXT field and care not about the length
Have another UNIQUE BINARY(32) (or 64, or 128 depending on your hash length) and hash the UserAgent
Some UA strings can get obscenely long. This should spare you the worr...
what's the correct way to send a file from REST web service to client?
...o my client. So far I've gotten the hang of how to send simple data types (strings, integers, etc) but sending a file is a different matter since there are so many file formats that I don't know where I should even begin. My REST service is made on Java and I'm using Jersey, I'm sending all the data...
Where is Erlang used and why? [closed]
...It has to route many messages simultaneously, and handle many a lot of TCP/IP connections.
So we have 2 features:
handle many connections
route messages given some aspects of the message
These are examples where erlang shines.
handle many connections
It is very easy to build scalable non-bloc...
HtmlSpecialChars equivalent in Javascript?
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};
})()
Note: Only run this once. And don't run it on already encoded strings e.g. & becomes &
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What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
..._CI_AS
breaks up into interesting parts:
latin1 makes the server treat strings using charset latin 1, basically ascii
CP1 stands for Code Page 1252
CI case insensitive comparisons so 'ABC' would equal 'abc'
AS accent sensitive, so 'ü' does not equal 'u'
P.S. For more detailed information be s...
Can I run multiple programs in a Docker container?
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There can be only one ENTRYPOINT, but that target is usually a script that launches as many programs that are needed. You can additionally use for example Supervisord or similar to take care of launching multiple services inside single container. This is an example of a docker container run...
Bash continuation lines
...is creates two arguments to echo and you only want one, then let's look at string concatenation. In bash, placing two strings next to each other concatenate:
$ echo "continuation""lines"
continuationlines
So a continuation line without an indent is one way to break up a string:
$ echo "continua...