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Copying files from Docker container to host
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In order to copy a file from a container to the host, you can use the command
docker cp <containerId>:/file/path/within/container /host/path/target
Here's an example:
$ sudo docker cp goofy_roentgen:/out_read.jpg .
H...
Specifying an Index (Non-Unique Key) Using JPA
...n only be used as part of another annotation like @Table, @SecondaryTable, etc.:
@Table(indexes = { @Index(...) })
JDO 2.1+: javax.jdo.annotations.Index
= ORM Frameworks =
♥ Hibernate ORM: org.hibernate.annotations.Index;
OpenJPA: org.apache.openjpa.persistence.jdbc.Index and org.apache.open...
What exactly is Python multiprocessing Module's .join() Method Doing?
...od.
and
Note It is important to join() the process after terminating it in order to give the background machinery time to update the status of the object to reflect the termination.
This is a good example helped me understand it: here
One thing I noticed personally was my main process paused until t...
What is an unsigned char?
...char)-1;
It also follows that a conversion is not just truncating higher order bits. The fortunate event for two's complement is that it is just a truncation there, but the same isn't necessarily true for other sign representations.
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Pimpl idiom vs Pure virtual class interface
...ugh. OTOH in pure abstract case they effectively link by vtable index so reordering methods or inserting in the middle will break compatibility.
– SnakE
Nov 25 '15 at 11:13
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Android WebView style background-color:transparent ignored on android 2.2
...lly affects a lot of things, videos, UI transformations, scrolling, canvas etc. A possible workaround stackoverflow.com/a/17815574/2487876
– Kristjan Liiva
Jan 9 '16 at 0:59
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What are database normal forms and can you give examples? [closed]
...ho came up with the idea of relational databases - things relying on keys, etc., so he would be the authority to go by in the case of relational databases.
– Smashery
Aug 12 '10 at 2:48
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Are there strongly-typed collections in Objective-C?
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There are no generics in Objective-C.
From the Docs
Arrays are ordered collections of objects. Cocoa provides several array classes, NSArray, NSMutableArray (a subclass of NSArray), and NSPointerArray.
share
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Why is i++ not atomic?
... of the crashes that can happen" or "you get no knife with your currywurst-order because the wurst may need to be cut". Thus, I don't think this is an answer. The question was not "What does i++ do?" or "What is the consequence of i++ not being synced?".
– Sebastian Mach
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How do I see the current encoding of a file in Sublime Text?
... 'Undefined' appears to imply: (a) the file has no BOM (byte-order mark), (b) the file contains only single-byte ASCII chars., (c) the file has not yet been saved by Sublime Text in this session. Once saved by ST , it then reports 'UTF8' until closed (on re-opening the guessing starts ...