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What is eager loading?
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There are three levels:
Eager loading: you do everything when asked. Classic example is when you multiply two matrices. You do all the calculations. That's eager loading;
Lazy loading: you only do a calculation when required. In the previous example, you don't do any ...
Why use def main()? [duplicate]
...edited Dec 21 '16 at 18:31
Drew Dormann
47.5k1111 gold badges101101 silver badges153153 bronze badges
answered Oct 28 '10 at 8:56
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Is it wrong to use Deprecated methods or classes in Java?
...ases be removed. That is, no, it's not wrong, but there is a better way of doing it, which is more robust against API changes.
2. What if I don't change any method and run my application with warnings that I have, will it create any performance issue.
Most likely no. It will continue to work a...
HEAD and ORIG_HEAD in Git
What do these symbols refer to and what do they mean?
4 Answers
4
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How is “mvn clean install” different from “mvn install”?
...hought of as an action or task) in Maven. mvn clean install tells Maven to do the clean phase in each module before running the install phase for each module.
What this does is clear any compiled files you have, making sure that you're really compiling each module from scratch.
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How to change value of process.env.PORT in node.js?
I'd like to change the value of process.env.PORT , how can I do this?
4 Answers
4
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Decorators with parameters?
...m with the transfer of variable 'insurance_mode' by the decorator. I would do it by the following decorator statement:
13 A...
How to check for file lock? [duplicate]
...come locked the very next second (read: short timespan).
Why specifically do you need to know if the file is locked anyway? Knowing that might give us some other way of giving you good advice.
If your code would look like this:
if not locked then
open and update file
Then between the two li...
Difference between Service, Async Task & Thread?
...en Service, Async Task & Thread. If i am not wrong all of them are used to do some stuff in background. So, how to decide which to use and when?
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csv.Error: iterator should return strings, not bytes
...flag rt (read, text) is the default, so, using the context manager, simply do this:
with open('sample.csv') as ifile:
read = csv.reader(ifile)
for row in read:
print (row)
The context manager means you don't need generic error handling (without which you may get stuck with the ...