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Set selected index of an Android RadioGroup
...oup>
In this case using an index of 1, for example, would generate an error. The item at index 1 is the first separator line -- not a radioButton. The radioButtons in this example are at indexes 0, 2, 4, 6.
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OAuth: how to test with local URLs?
... OAuth buttons, but they all (Facebook, Twitter, LinkedIn) come back with errors that seem to signal that I can not test or use them from a local URL.
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Asynchronous shell exec in PHP
...t, using /dev/null is the better practice, as writing to closed FDs causes errors, whereas attempts to read or write to /dev/null simply silently do nothing.
– Charles Duffy
Oct 22 '13 at 14:49
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How to get the nth element of a python list or a default if not available
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try:
a = b[n]
except IndexError:
a = default
Edit: I removed the check for TypeError - probably better to let the caller handle this.
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im...
How to write to file in Ruby?
...ile = File.open("/tmp/some_file", "w")
file.write("your text")
rescue IOError => e
#some error occur, dir not writable etc.
ensure
file.close unless file.nil?
end
You can find it in documentation:
static VALUE rb_io_s_open(int argc, VALUE *argv, VALUE klass)
{
VALUE io = rb_class_ne...
Best way to alphanumeric check in JavaScript
...character ranges manually:
if (!input_string.match(/^[0-9a-z]+$/))
show_error_or_something()
Here ^ means beginning of string and $ means end of string, and [0-9a-z]+ means one or more of character from 0 to 9 OR from a to z.
More information on Javascript regexen here:
https://developer.mozil...
Openssl is not recognized as an internal or external command
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Getting error " Both context and applicationId must be non-null", when used above code. @SagarChavada
– Yesha Shah
Nov 3 '18 at 7:11
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How can a Java variable be different from itself?
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Or lead into a compile error, if a is declared as String a = "Nope"; That why I asked for the type of 'a'
– Christian Kuetbach
Dec 4 '13 at 12:16
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Batch file to copy files from one folder to another folder
...rce d:\target, put "" around the c:\source and d:\target,otherwise you get error.
ie if there are spaces in the path ie if you have:
"C:\Some Folder\*.txt"
but not required if you have:
C:\SomeFolder\*.txt
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Which HTML elements can receive focus?
...aElement/HTMLButtonElement but not with disabled (IE actually gives you an error if you try), and file uploads have unusual behaviour for security reasons
HTMLIFrameElement (though focusing it doesn't do anything useful). Other embedding elements also, maybe, I haven't tested them all.
Any element w...