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Why does String.valueOf(null) throw a NullPointerException?
according to the documentation, the method String.valueOf(Object obj) returns:
4 Answers
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Change text color based on brightness of the covered background area?
I've thought about the following for a while already, so now I want to know your opinions, possible solutions, and so on.
8...
Passing an Array as Arguments, not an Array, in PHP
I seem to remember that in PHP there is a way to pass an array as a list of arguments for a function, dereferencing the array into the standard func($arg1, $arg2) manner. But now I'm lost on how to do it. I recall the manner of passing by reference, how to "glob" incoming parameters ... but not ...
Timertask or Handler
...and repeated tasks on background threads. However, the literature overwhelmingly recommends using Handler over TimerTask in Android (see here, here, here, here, here, and here).
Some of reported problems with TimerTask include:
Can't update the UI thread
Memory leaks
Unreliable (doesn't always w...
How to get default gateway in Mac OSX
I need to retrieve the default gateway on a Mac machine. I know that in Linux route -n will give an output from which I can easily retrieve this information. However this is not working in Mac OSX(Snow Leopard).
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What's the meaning of 'origin' in 'git push origin master'
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origin is the default name of the remote git repository you cloned from. Have a look at .git/refs/remotes/origin/* and .git/config within your sources to see how git knows about it.
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How do I check if the Java JDK is installed on Mac?
How do you check if Java SDK is installed on a Mac?
8 Answers
8
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How to get result of console.trace() as string in javascript with chrome or firefox?
....trace() outputs its result on console.
I want to get the results as string and save them to a file.
I don't define names for functions and I also can not get their names with callee.caller.name .
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Does git return specific return error codes?
Like merging errors, or rebase errors. Does it have a unique error code?
6 Answers
6
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ElasticSearch - Return Unique Values
...field" : "language", "size" : 500 }
}
}}
A search will return something like:
{
"took" : 16,
"timed_out" : false,
"_shards" : {
"total" : 2,
"successful" : 2,
"failed" : 0
},
"hits" : {
"total" : 1000000,
"max_score" : 0.0,
"hits" : [ ]
},
"aggregations" : {
"langs" : {
"buckets"...