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In PHP, can you instantiate an object and call a method on the same line?
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The feature you have asked for is available from PHP 5.4. Here is the list of new features in PHP 5.4:
http://php.net/manual/en/migration54.new-features.php
And the relevant part from the new features list:
Class member access on instantiation ha...
How to create a trie in Python
...tially correct that there are many different ways to implement a trie; and for a large, scalable trie, nested dictionaries might become cumbersome -- or at least space inefficient. But since you're just getting started, I think that's the easiest approach; you could code up a simple trie in just a f...
Is it possible to declare a variable in Gradle usable in Java?
... I have discovered is well is that you could specify alternate directories for the debug and release builds. In <project>/src/, if you create the file debug/res/values/strings.xml and another file release/res/values/strings.xml, you could set resources for the debug and release builds in a sl...
How do you read from stdin?
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You could use the fileinput module:
import fileinput
for line in fileinput.input():
pass
fileinput will loop through all the lines in the input specified as file names given in command-line arguments, or the standard input if no arguments are provided.
Note: line will co...
Error handling in C code
...ct (or use a out pointer if struct is really large) and have a function to format the struct as a string.
– Winger Sendon
Sep 27 '18 at 22:50
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Setting element of array from Twig
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I was looking for a way to define dynamic variable key in replacement of 'element'. I found @LivaX's answer below. So, it would be {% set arr = arr|merge({(key): 'value'}) %}.
– Sithu
Nov 4 '15 at 9:0...
How do I write output in same place on the console?
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It seems like the simplest solution for python 3 (as mentioned in answers below) is: print("sample text", end='\r", flush=True)
– Cyrus
Feb 22 '18 at 22:20
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Add new field to every document in a MongoDB collection
...t meet the query criteria. If set to false, updates one document.
This is for Mongo versions prior to 2.2. For latest versions the query is changed a bit
db.your_collection.update({},
{$set : {"new_field":1}},
{upsert:false,
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C# Float expression: strange behavior when casting the result float to int
...luate tmp2
Update: As noted in the comments, the expression 6.2f * 10 is formally a float since the second parameter has an implicit conversion to float which is better than the implicit conversion to double.
The actual issue is that the compiler is permitted (but not required) to use an intermed...
Convert datetime object to a String of date only in Python
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You can use strftime to help you format your date.
E.g.,
import datetime
t = datetime.datetime(2012, 2, 23, 0, 0)
t.strftime('%m/%d/%Y')
will yield:
'02/23/2012'
More information about formatting see here
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