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Different types of thread-safe Sets in Java
... Just a sight correction in 1), the process of copying data into the new array must be locked down by synchronizing. Therefore, CopyOnWriteArraySet doesn't totally avoid the necessity of synchronization.
– CaptainHastings
Jun 5 '15 at 13:07
...
How to hide the title bar for an Activity in XML with existing custom theme
...itleBar" because I lost all of the 3.0+ Holo changes that the users of the new devices have gotten used to. So I came across this solution.
In your res/values folder make a file called styles.xml (If it doesn't already exist). In that file place the following code:
<resources xmlns:android="h...
How do I check in JavaScript if a value exists at a certain array index?
...mple, if you add array values by increasing the array.length property, any new values will be undefined.
To determine if a given value is something meaningful, or has been defined. That is, not undefined, or null:
if (typeof array[index] !== 'undefined') {
or
if (typeof array[index] !== 'und...
Java 8: performance of Streams vs Collections
I'm new to Java 8. I still don't know the API in depth, but I've made a small informal benchmark to compare the performance of the new Streams API vs the good old Collections.
...
How can I prevent the scrollbar overlaying content in IE10?
...the comment in the latest Boostrap source file (updated my answer with the new comments), which now mentions the use of a UA sniffing script to apply this to "only the Surface/desktop Windows 8" - check out the issue link github.com/twbs/bootstrap/issues/10497
– xec
...
Multiple commands in an alias for bash
...sts comm; then
comm -3 "$1" "$2"
fi | less
}
A function is a new command that has internal logic. It isn't simply a rename of another command. It does internal operations.
Technically, aliases in the Bash shell language are so limited in capabilities that they are extremely ill suit...
Why declare a struct that only contains an array in C?
...
You can use struct to make a new type of data like string. you can define :
struct String {
char Char[MAX];
};
or you can create a List of data that you can use it by argument of functions or return it in your methods. The struct is more flexible ...
Status bar won't disappear
...The code you posted works for iOS 6.1 and below. For iOS 7, Apple has made new methods available to directly control the status bar for each view. Turning off this option in your Info.plist will enable you to hide the status bar, at least for the current Developer Preview (4).
For reference, plea...
C++ sorting and keeping track of indexes
...n ascending order, but I also want to remember the original indexes of the new samples.
15 Answers
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JavaScript - cannot set property of undefined
... could set all the properties of d in an anonymous function instance:
d = new function () {
this[a] = {
greetings: b,
data: c
};
};
If you're in an environment that supports ES2015 features, you can use computed property names:
d = {
[a]: {
greetings: b,
data:...