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Reference — What does this symbol mean in PHP?
...to display the current number of apples, and then you want to subtract one from it.
You can also increment letters in PHP:
$i = "a";
while ($i < "c") {
echo $i++;
}
Once z is reached aa is next, and so on.
Note that character variables can be incremented but not decremented and even s...
How to sort Counter by value? - python
... Counter.most_common() method, it'll sort the items for you:
>>> from collections import Counter
>>> x = Counter({'a':5, 'b':3, 'c':7})
>>> x.most_common()
[('c', 7), ('a', 5), ('b', 3)]
It'll do so in the most efficient manner possible; if you ask for a Top N instead o...
How can you escape the @ character in javadoc?
...
Just write it as an HTML entity:
&#064;
From the document "javadoc - The Java API Documentation Generator"
If you want to start a line with the @ character and not have it be interpreted, use the HTML entity @.
This implies that you can use HTML entities for any ...
Why doesn't Python have a sign function?
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Floats hold "sign" separate from "value"; -0.0 is a negative number, even if that seems an implementation error. Simply using cmp() will give the desired results, probably for nearly every case anyone would care about: [cmp(zero, 0) for zero in (0, 0.0...
How can I wait till the Parallel.ForEach completes
...l, Parallel.Foreach() will wait until all its branched tasks are complete. From the calling thread you can treat it as a single synchronous statement and for instance wrap it inside a try/catch.
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Django admin: how to sort by one of the custom list_display fields that has no database field
...t I'd like to point that you can do the same thing directly in the admin:
from django.db import models
class CustomerAdmin(admin.ModelAdmin):
list_display = ('number_of_orders',)
def get_queryset(self, request):
# def queryset(self, request): # For Django <1.6
qs = super(Cu...
JavaScript + Unicode regexes
...s into a set of code points. Since it's Unicode's website, the information from it should be accurate.
Note that you will need to exclude the high-end characters, as JavaScript can only handle characters less than FFFF (hex). I suggest checking the Abbreviate Collate, and Escape check boxes, whi...
Android DialogFragment vs Dialog
...sage - the problem is okMessage's target which will be null if you load it from a Bundle. If the target of a Message is null, and you use sendToTarget, you will get a NullPointerException - not because the Message is null, but because its target is.
– hrnt
Nov ...
C#: Looping through lines of multiline string
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from MSDN for StringReader
string textReaderText = "TextReader is the abstract base " +
"class of StreamReader and StringReader, which read " +
"characters from streams and strings, respectively.\n\n" +
...
How to exit pdb and allow program to continue?
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embarassing, but this saved me from being stuck for too long -_-
– jmcg
Oct 25 '19 at 6:52
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