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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
I've seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option:
6 Answers...
Convert array of strings into a string in Java
I want the Java code for converting an array of strings into an string.
13 Answers
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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
I have no idea why these lines of code return different values:
5 Answers
5
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400 BAD request HTTP error code meaning?
I have a JSON request which I'm posting to a HTTP URL.
8 Answers
8
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Fastest Way to Find Distance Between Two Lat/Long Points
...h approx 5 million records and a spatial index with this method the search time is is 0.005 seconds on a old A8 processor. I know that 6371 can be replaced with 3959 to get results in miles but do the values of 111.133 and 111.320 need to be adjusted or are they universally constant?
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PHP json_decode() returns NULL with valid JSON?
I have this JSON object stored on a plain text file:
21 Answers
21
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Math - mapping numbers
How do I map numbers, linearly, between a and b to go between c and d.
9 Answers
9
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how to return index of a sorted list? [duplicate]
I need to sort a list and then return a list with the index of the sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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How to find files that match a wildcard string in Java?
This should be really simple. If I have a String like this:
16 Answers
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Asp Net Web API 2.1 get client IP address
Hello I need get client IP that request some method in web api,
I have tried to use this code from here but it always returns server local IP,
how to get in correct way ?
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