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What are the lesser known but useful data structures?
There are some data structures around that are really useful but are unknown to most programmers. Which ones are they?
83 A...
How do I escape spaces in path for scp copy in Linux?
I'm new to linux, I want to copy a file from remote to local system... now I'm using scp command in linux system.. I have some folders or files names are with spaces, when I try to copy that file, it shows the error message: "No such file or directory"
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Sort ArrayList of custom Objects by property
...StartDate().compareTo(o2.getStartDate());
}
});
Since java-8
You can now write the last example in a shorter form by using a lambda expression for the Comparator:
Collections.sort(Database.arrayList,
(o1, o2) -> o1.getStartDate().compareTo(o2.getStartDate()));
And ...
Explicit vs implicit SQL joins
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The first answer you gave uses what is known as ANSI join syntax, the other is valid and will work in any relational database.
I agree with grom that you should use ANSI join syntax. As they said, the main reason is for clarity. Rather than having a where clause w...
Get attribute name value of
...lve the problem. OP wants to get the name value; this assumes you already know it.
– felwithe
May 1 '15 at 22:06
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Efficient way to remove ALL whitespace from String?
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This is fastest way I know of, even though you said you didn't want to use regular expressions:
Regex.Replace(XML, @"\s+", "")
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Making TextView scrollable on Android
...ise the scrollview doesn't work! (this has caused me to waste an hour just now! FFS).
PRO TIP:
To programmatically scroll to the bottom after appending text, use this:
mTextStatus = (TextView) findViewById(R.id.TEXT_STATUS_ID);
mScrollView = (ScrollView) findViewById(R.id.SCROLLER_ID);
private ...
Problems with Android Fragment back stack
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If we keep in mind that .replace() is equal with .remove().add() that we know by the documentation:
Replace an existing fragment that was added to a container. This is essentially the same as calling remove(Fragment) for all currently added fragments that were added with the same containerViewI...
When - and why - should you store data in the Windows Registry?
... used the registry.
From windows Vista, we use ini files although they are now xml based.
The registry is machine dependent. I have never liked it because its getting to slow and it is almost imposible to find the thing you need. That's why I like simple ini or other setting files. You know where ...
When do I really need to use atomic instead of bool? [duplicate]
...ult (the constraints are a bit more complicated, but that's sufficient for now).
You can deal with each of these three problems on your own by making assumptions about how the types you are using are implemented, by explicitly flushing caches, and by using compiler-specific options to prevent reord...