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Long-held, incorrect programming assumptions [closed]
I am doing some research into common errors and poor assumptions made by junior (and perhaps senior) software engineers.
19...
How does autowiring work in Spring?
I'm a little confused as to how the inversion of control ( IoC ) works in Spring .
11 Answers
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What is the 
 character?
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 is the HTML representation in hex of a line feed character. It represents a new line on Unix and Unix-like (for example) operating systems.
You can find a list of such characters at (for example) http://la.remifa.so/unicode/latin1.html
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How to prevent Node.js from exiting while waiting for a callback?
... developer .
If a module is a quick port from a synchronous/blocking version, this may not happen til some part of the operation has completed and all the queues might empty before that occurs, allowing node to exit silently.
This is a sneaky bug, that is one that the module developer might not r...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
... and so Date has a toISOString method. You're asking for a slight modification of ISO8601:
new Date().toISOString()
> '2012-11-04T14:51:06.157Z'
So just cut a few things out, and you're set:
new Date().toISOString().
replace(/T/, ' '). // replace T with a space
replace(/\..+/, '') ...
Read/Write String from/to a File in Android
...amWriter.write(data);
outputStreamWriter.close();
}
catch (IOException e) {
Log.e("Exception", "File write failed: " + e.toString());
}
}
Read File:
private String readFromFile(Context context) {
String ret = "";
try {
InputStream inputStream = conte...
How do you assert that a certain exception is thrown in JUnit 4 tests?
How can I use JUnit4 idiomatically to test that some code throws an exception?
34 Answers
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Purpose of Python's __repr__
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__repr__ should return a printable representation of the object, most likely one of the ways possible to create this object. See official documentation here. __repr__ is more for developers while __str__ is for end users.
A simple example:
>>> class Point:
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Best way to read a large file into a byte array in C#?
...lBytes(fileName);
However, if you are concerned about the memory consumption, you should not read the whole file into memory all at once at all. You should do that in chunks.
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Express.js: how to get remote client address
... 'x-forwarded-for':
var ip = req.headers['x-forwarded-for'] || req.connection.remoteAddress;
If the proxy isn't 'yours', I wouldn't trust the 'x-forwarded-for' header, because it can be spoofed.
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