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Python append() vs. + operator on lists, why do these give different results?
Why do these two operations ( append() resp. + ) give different results?
7 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...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
Git has a well-known, or at least sort-of-well-known, empty tree whose SHA1 is:
3 Answers
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Using an if statement to check if a div is empty
I'm trying to remove a specific div if a separate div is empty. Here's what I'm using:
10 Answers
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How can I see the raw SQL queries Django is running?
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Great answer. However, it is recommended to use the specified, builtin Pythonian str() function, which invokes the internal __str__() method. e.g. str(MyModel.objects.filter(name="my name").query) I would also recommend using IPython and the Django shell of your project. Tab comp...
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 mock the Request on Controller in ASP.Net MVC?
...lt;T>.SetupGet<Tpropert>.... cannot be infered from uage. Try specifying the type arguments explicitly. What type do I set 'var request=' to though to get this to work?
– Nissan
Jun 9 '09 at 14:14
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Android SDK on a 64-bit linux machine
...versions before they brought in Multiarch support. The correct approach is now to install the right i386 packages
– Jacob
Apr 1 '13 at 12:22
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Node.js Logging
...gger for connect/express servers
Configurable log message layout/patterns
Different log levels for different log categories (make some parts
of your app log as DEBUG, others only ERRORS, etc.)
Example:
Installation: npm install log4js
Configuration (./config/log4js.json):
{"appenders": [
{...
How do I save a String to a text file using Java?
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The function is now deprecated, you should add the default charset --> FileUtils.writeStringToFile(new File("test.txt"), "Hello File", forName("UTF-8"));
– Paul Fournel
Nov 9 '17 at 8:10
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