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How can I get useful error messages in PHP?
...en I will try and run a PHP script and just get a blank screen back. No error message; just an empty screen. The cause might have been a simple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely.
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Printing newlines with print() in R
I am trying to print a multiline message in R. For example,
4 Answers
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Batch file: Find if substring is in string (not in a file)
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Yes, you can use substitutions and check against the original string:
if not x%str1:bcd=%==x%str1% echo It contains bcd
The %str1:bcd=% bit will replace a bcd in str1 with an empty string, making it different from the original.
If the original didn't contain a bcd string in...
Get OS-level system information
...tly building a Java app that could end up being run on many different platforms, but primarily variants of Solaris, Linux and Windows.
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
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spl_autoload_register() allows you to register multiple functions (or static methods from your own Autoload class) that PHP will put into a stack/queue and call sequentially when a "new Class" is declared.
So for example:
spl_autoload_register('myAutoloader');
function myAutoloader($clas...
How can I get the timezone name in JavaScript?
...set, but what I need is the ability to detect something like "America/New York." Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset?
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DateTime vs DateTimeOffset
...wn as absolute time). By that, I mean a moment in time that is universal for everyone (not accounting for leap seconds, or the relativistic effects of time dilation). Another way to represent instantaneous time is with a DateTime where .Kind is DateTimeKind.Utc.
This is distinct from calendar tim...
How to list only the file names that changed between two commits?
...ed to include enough of the SHA to identify the commits. You can also do, for example
git diff --name-only HEAD~10 HEAD~5
to see the differences between the tenth latest commit and the fifth latest (or so).
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how do I check in bash whether a file was created more than x time ago?
I want to check in linux bash whether a file was created more than x time ago.
8 Answers
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Difference between Java SE/EE/ME?
...with some basics, so I will write simple programs that create files, directories, edit XML files and so on, nothing too complex for now.
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