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Why do you have to call .items() when iterating over a dictionary in Python?
...-- which is a check I believe I may have performed, or wanted to perform, 100 times more rarely than what if k in C actually means, checking the presence of the key only and completely ignoring the value.
On the other hand, wanting to loop just on keys is quite common, e.g.:
for k in thedict:
...
java.net.UnknownHostException: Invalid hostname for server: local
... local computer. Try with the hostname "localhost" instead, or perhaps 127.0.0.1 or ::1 (the last one is IPv6).
From the javadocs:
Thrown to indicate that the IP address
of a host could not be determined.
127.0.0.1or ::1 or "localhost" should always be the loopback interface, so if that doe...
What does “javascript:void(0)” mean?
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1081
The void operator evaluates the given
expression and then returns undefined.
The voi...
What's the difference between getRequestURI and getPathInfo methods in HttpServletRequest?
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edited Oct 6 '16 at 19:40
Victor Stafusa
12.1k99 gold badges5252 silver badges6767 bronze badges
answe...
Redis key naming conventions?
...ma. For instance "object-type:id:field" can be
a nice idea, like in "user:1000:password". I like to use dots for
multi-words fields, like in "comment:1234:reply.to".
Are you able to query for just the beginning of the key to return all
users?
If you mean someting like directly querying for a...
What is the purpose of @SmallTest, @MediumTest, and @LargeTest annotations in Android?
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answered Aug 11 '17 at 14:02
azizbekianazizbekian
50.1k99 gold badges131131 silver badges214214 bronze badges
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All but last element of Ruby array
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130
Perhaps...
a = t # => [1, 2, 3, 4]
a.first a.size - 1 # => [1, 2, 3]
or
...
Android: How can I pass parameters to AsyncTask's onPreExecute()?
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230
You can override the constructor. Something like:
private class MyAsyncTask extends AsyncTask&l...
textarea's rows, and cols attribute in CSS
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107
width and height are used when going the css route.
<!DOCTYPE html>
<html>
<...
Can a class extend both a class and implement an Interface
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180
Try it the other way around:
class database extends mysqli implements databaseInterface { ...}
...