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Internal vs. Private Access Modifiers
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Convert array of strings into a string in Java
...bug-style" dump of an array:
String str = Arrays.toString(arr);
or, for more control (before Java 8):
StringBuilder builder = new StringBuilder();
for(String s : arr) {
builder.append(s);
}
String str = builder.toString();
(Java 8 and above):
String str = String.join(",", arr);
And if y...
Get color value programmatically when it's a reference (theme)
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Center a button in a Linear layout
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Not to mention the fact that a RelativeLayout is much more runtime intensive due to the way they have to have their dimensions measured, whereas a LinearLayout is super straightforward and much more efficient.
– Trevor Hart
Jul 14 '17 at 19...
Use “ENTER” key on softkeyboard instead of clicking button
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ConcurrentHashMap vs Synchronized HashMap
...ers which is not possible for synchronized collections. This leads to much more scalability.
ConcurrentHashMap does not throw a ConcurrentModificationException if one thread tries to modify it while another is iterating over it.
This article Java 7: HashMap vs ConcurrentHashMap is a very good re...
Find an element in DOM based on an attribute value
... not, you need not rely it on just for selecting elements by attributes anymore.
There's not a very short way to do this in vanilla javascript, but there are some solutions available.
You do something like this, looping through elements and checking the attribute
If a library like jQuery is an ...
How to increase the vertical split window size in Vim
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or :30winc > and :30winc < to have 30 more/less characters wide.
– Benoit
Dec 6 '10 at 16:41
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How to unload a package without restarting R
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Try this (see ?detach for more details):
detach("package:vegan", unload=TRUE)
It is possible to have multiple versions of a package loaded at once (for example, if you have a development version and a stable version in different libraries). To gu...