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Python __str__ versus __unicode__
...ould implement __str__() versus __unicode__() . I've seen classes override __unicode__() more frequently than __str__() but it doesn't appear to be consistent. Are there specific rules when it is better to implement one versus the other? Is it necessary/good practice to implement both?
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When and why would you seal a class?
...security class's definition? Even if the answer would be "yes", this would ideally be a compiler option i.e. "generate optimized code for all non-sealed classes", rather than having us developers to alter code base.
– RayLuo
May 2 '17 at 21:15
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How to use Git properly with Xcode?
...me time. The solution in 99% of the merge conflict cases is to keep both sides of the merge, which for git at least simply involves removing any >>>>, <<<<, and ==== lines. In fact this is so common that I have created a simple shell script to fix a .pbxproj file in a merge...
New Array from Index Range Swift
... I've add a little more context to my question, I'm working inside a function. This works independently, but not inside the function.
– Charlie Egan
Jun 4 '14 at 10:06
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Why doesn't the JVM cache JIT compiled code?
... Because it's probably not worth it. If neither SUN, IBM nor BEA considered it worthwhile for their performance JVMs, there's going to be a good reason for it. Maybe their RT optimisation is faster than Oracle's, which is why Oracle caches it.
– skaffman
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ASP.NET Web API Authentication
...ent application while using the ASP.NET Web API . I have watched all the videos on the site and also read this forum post .
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memory_get_peak_usage() with “real usage”
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@Niko, Why did you use memory_get_peak_usage instead of memory_get_usage ? Shouldn't we gc_disable() and use memory_get_usage to get a more accurate result?
– Pacerier
Jul 13 '13 at 7:34
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Difference between matches() and find() in Java Regex
... not look for a substring. Hence the output of this code:
public static void main(String[] args) throws ParseException {
Pattern p = Pattern.compile("\\d\\d\\d");
Matcher m = p.matcher("a123b");
System.out.println(m.find());
System.out.println(m.matches());
p = Pattern.compile(...
How to customize the background/border colors of a grouped table view cell?
...ne that needs it…
It's harder than it really should be. Here's how I did this when I had to do it:
You need to set the UITableViewCell's backgroundView property to a custom UIView that draws the border and background itself in the appropriate colors. This view needs to be able to draw the bord...
Local variables in nested functions
...ets the cat.
dog: Mary pets the cat.
cat: Mary pets the cat.
But if we avoid creating a list() first:
>>> for name, f in get_petters():
... print(name + ":", f())
cow: Mary pets the cow.
dog: Mary pets the dog.
cat: Mary pets the cat.
What's going on? Why does this subtle difference ...