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Why are empty strings returned in split() results?
...er-joined records (such as csv file lines [[net of quoting issues]], lines from /etc/group in Unix, and so on), it allows (as @Roman's answer mentioned) easy checks for (e.g.) absolute vs relative paths (in file paths and URLs), and so forth.
Another way to look at it is that you shouldn't wantonly...
How to list only the file names that changed between two commits?
...s in the repo. I want to see a list of files changed between two commits - from SHA1 to SHA2.
13 Answers
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Building big, immutable objects without using constructors having long parameter lists
...ate the interfaces that it exposes to mutable and immutable. This is taken from the Swing library design.
public interface Foo {
X getX();
Y getY();
}
public interface MutableFoo extends Foo {
void setX(X x);
void setY(Y y);
}
public class FooImpl implements MutableFoo {...}
public SomeC...
Should I call Close() or Dispose() for stream objects?
...t assumes you can use a using block. I'm implementing a class that writes from time to time and therefore cannot.
– Jez
Dec 6 '14 at 15:08
5
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Setting PATH environment variable in OSX permanently
...d the answer for the reference added which explains how to remove elements from path (in the comments) too.
– Amudhan
Dec 14 '15 at 10:03
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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...# Sort of sorted...
{'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5}
>>> from collections import OrderedDict
>>> OrderedDict(df.values.tolist())
OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)])
In Long
Explaining solution: dict(sorted(df.values.tolist()))
Given:
df = p...
Accessing nested JavaScript objects and arays by string path
... using reduce is an excellent solution (one can also use _.reduce() from the underscore or lodash library)
– Alp
May 22 '14 at 14:51
4
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Should private helper methods be static if they can be static
...y the state of the object" -perfect explanation of how to differentiate it from a private method.
– HopeKing
Jun 26 '17 at 15:33
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How to check if Receiver is registered in Android?
...lters, creating the potential for an IllegalArgumentException being thrown from Context#unregisterReceiver(BroadcastReceiver).
In my case, I can store a private synchronized member to check before calling Context#unregisterReceiver(BroadcastReceiver), but it would be
much cleaner if the API p...
What is a regular expression for a MAC Address?
... As an aside, the quote above concerning "standard format" comes from Wikipedia, not the 802.3 standards body. IEEE 802-2014 actually specifies hyphens for ordinary MAC addresses (§ 8.1 ¶ 3) and colons for the obsolescent bit-reversed notation (¶ 4). Importantly, in practice, no one o...