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How to avoid reinstalling packages when building Docker image for Python projects?
...c66c7
As you can see above, this time docker uses cache during the build. Now, let's update requirements.txt:
# requirements.txt
pytest==2.3.4
ipython
Below is the output of docker build:
Sending build context to Docker daemon 5.12 kB
Sending build context to Docker daemon
Step 0 : FROM dockerf...
What's the difference between assignment operator and copy constructor?
I don't understand the difference between assignment constructor and copy constructor in C++. It is like this:
8 Answers
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Where to store global constants in an iOS application?
... way, you can switch between servers depending on compiler flags, as in:
#ifdef DEBUG
#define kBaseURL @"http://192.168.0.123/"
#else
#define kBaseURL @"http://myproductionserver.com/"
#endif
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Does Go have “if x in” construct similar to Python?
Without iterating over the entire array, how can I check if x in array using Go? Does the language have a construct?
7 A...
Why doesn't JavaScript have a last method? [closed]
... does not offer a last method to retrieve the last element of an array. I know the solution is simple (Ar[Ar.length-1] ), but, still, this is too frequently used.
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How to generate a random string in Ruby
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@stringo0 that is wrong. If you wanted to pass +fGH1 through a URL, you just need to URL-encode it like you would ANY value that's going through a URL: %2BfGH1
– nzifnab
Mar 31 '15 at 21:08
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multiple prints on the same line in Python
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This doesn't work if you have both prints and a time consuming action in between (all in the same function / indentation level). Before the action starts, there is no output at all and after it is finished the output appears as whole
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Determine if code is running as part of a unit test
...ve a unit test (nUnit). Many layers down the call stack a method will fail if it is running via a unit test.
19 Answers
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Purge Kafka Topic
...r is correct, that method has been deprecated. Topic configuration should now be done via kafka-configs.
kafka-configs --zookeeper localhost:2181 --entity-type topics --alter --add-config retention.ms=1000 --entity-name MyTopic
Configurations set via this method can be displayed with the command...
How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
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I know that cloning the list would help, but I don't know if it is a good approach. But I'll add some more code.
– RoflcoptrException
Nov 12 '11 at 13:32
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