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Check if string contains only digits
I want to check if a string contains only digits. I used this:
14 Answers
14
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How do I convert Long to byte[] and back in java
...that I think you're better off using a library like Guava in the vast majority of cases. And if you have some strange opposition to libraries, you should probably consider this answer first for native java solutions. I think the main thing my answer really has going for it is that you don't have to ...
Bootstrap 3: Keep selected tab on page refresh
I am trying to keep selected tab active on refresh with Bootstrap 3 . Tried and checked with some question already been asked here but none of work for me. Don't know where I am wrong. Here is my code
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What is the session's “secret” option?
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Yes, you should change it. A session secret in connect is simply used to compute the hash. Without the string, access to the session would essentially be "denied". Take a look at the connect docs, that should help a little bit.
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How to zero pad a sequence of integers in bash so that all have the same width?
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In your specific case though it's probably easiest to use the -f flag to seq to get it to format the numbers as it outputs the list. For example:
for i in $(seq -f "%05g" 10 15)
do
echo $i
done
will produce the following output:
00010
00011
00012
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Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)
...RDIFF_T_SPECIFIER "%zd"
#else
// TODO figure out which to use.
#if NUMBITS == 32
#define JL_SIZE_T_SPECIFIER something_unsigned
#define JL_SSIZE_T_SPECIFIER something_signed
#define JL_PTRDIFF_T_SPECIFIER something_signed
#else
#define JL_SIZE_T_SPECIFIER something_bigg...
How to get visitor's location (i.e. country) using geolocation? [duplicate]
...ime.
If you really need to get their location, you can get their lat/lng with that method, then query Google's or Yahoo's reverse geocoding service.
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How can I parse a JSON file with PHP? [duplicate]
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To iterate over a multidimensional array, you can use RecursiveArrayIterator
$jsonIterator = new RecursiveIteratorIterator(
new RecursiveArrayIterator(json_decode($json, TRUE)),
RecursiveIteratorIterator::SELF_FIRST);
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Automatically import modules when entering the python or ipython interpreter
...interactive
commands are executed so that objects defined or imported in it can be
used without qualification in the interactive session.
So, just create a python script with the import statement and point the environment variable to it. Having said that, remember that 'Explicit is always bett...
Make function wait until element exists
...ing to add a canvas over another canvas – how can I make this function wait to start until the first canvas is created?
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