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how do I query sql for a latest record date for each user
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Careful with this approach: it can return more than one row per user if they have more than one record per date (max(date) would return a date that would join multiple records). To avoid this issue, it would be preferable to use @dotjoe's solution: stackoverflow.com/...
Integer.toString(int i) vs String.valueOf(int i)
...)
and so on
In my opinion this is not some historical thing, but it is more useful for a developer to use the method valueOf from the String class than from the proper type, as it leads to fewer changes for us to make.
Sample 1:
public String doStuff(int num) {
// Do something with num...
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How to load images dynamically (or lazily) when users scrolls them into view
...about the same way: afarkas.github.io/lazysizes except I believe it's much more robust and uses more of what's already there (no need for placeholder, for instance, but you can have it if you want).
– cregox
May 28 '15 at 17:19
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.NET WebAPI Serialization k_BackingField Nastiness
...ld serialize all the public properties for you.
Only if you want to have more control about what's included, you then decorate your class with [DataContract] and the properties to be included with [DataMember] (because both DCS and JSON.NET respsect these attributes).
If for some reason, you need...
How can I extract a predetermined range of lines from a text file on Unix?
...s, replace the pattern space with the next line of input. If
there is no more input then sed exits without processing any more
commands.
q -
Exit sed without processing any more commands or input.
Note that the current pattern space is printed if auto-print is not disabled with the -n o...
Regex to get string between curly braces
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252
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Linux/Unix command to determine if process is running?
... "Process is running."
else
echo "Process is not running."
fi
Furthermore, if you would like the list of PIDs, you could easily grep for those as well:
ps cax | grep httpd | grep -o '^[ ]*[0-9]*'
Whose output is the same on Linux and OS X:
3519 3521 3523 3524
The output of the following is...
Difference between array_map, array_walk and array_filter
...n (&$v, $k) { $v = floor($v); });
print_r($origarray2);
// this is a more proper use of array_walk
array_walk($origarray1, function ($v, $k) { echo "$k => $v", "\n"; });
// array_map accepts several arrays
print_r(
array_map(function ($a, $b) { return $a * $b; }, $origarray1, $origarra...
Create a string of variable length, filled with a repeated character
...ethod. Looking forward to the day when I don't have to care about them anymore, myself . . .
– talemyn
Sep 24 '18 at 19:41
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How do I detect when someone shakes an iPhone?
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