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What is the best algorithm for overriding GetHashCode?
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20 Answers
20
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Accessing members of items in a JSONArray with Java
...Object(int), and JSONArray.length() to create your for-loop:
for (int i = 0; i < recs.length(); ++i) {
JSONObject rec = recs.getJSONObject(i);
int id = rec.getInt("id");
String loc = rec.getString("loc");
// ...
}
...
Java Date cut off time information
... // locale-specific
cal.setTime(dateObject);
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
long time = cal.getTimeInMillis();
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What's the most efficient way to erase duplicates and sort a vector?
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601
I agree with R. Pate and Todd Gardner; a std::set might be a good idea here. Even if you're st...
NumPy: function for simultaneous max() and min()
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50
Is there a function in the numpy API that finds both max and min with only a single pass thro...
How to get current CPU and RAM usage in Python?
...culate percentage of available memory
psutil.virtual_memory().available * 100 / psutil.virtual_memory().total
20.8
Here's other documentation that provides more concepts and interest concepts:
https://psutil.readthedocs.io/en/latest/
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Remove a HTML tag but keep the innerHtml
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304
$('b').contents().unwrap();
This selects all <b> elements, then uses .contents() to tar...
What is REST? Slightly confused [closed]
...ation. The seminal paper on this was Roy Thomas Fielding's dissertation (2000), "Architectural Styles and the Design of Network-based Software Architectures" (available online from the University of California, Irvine).
First read Ryan Tomayko's post How I explained REST to my wife; it's a great s...
Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...t isinstance(s, str) or not s.isdigit():
return None
elif len(s) > 10: #too many digits for int conversion
return None
else:
return int(s)
Better (EAFP: Easier to ask for forgiveness than permission):
try:
return int(s)
except (TypeError, ValueError, OverflowError): #int con...
Creating a ZIP Archive in Memory Using System.IO.Compression
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307
Thanks to https://stackoverflow.com/a/12350106/222748 I got:
using (var memoryStream = new Mem...