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Find object in list that has attribute equal to some value (that meets any condition)
...x for x in test_list if x.value == value), None)
This gets the first item from the list that matches the condition, and returns None if no item matches. It's my preferred single-expression form.
However,
for x in test_list:
if x.value == value:
print("i found it!")
break
The na...
How can I use break or continue within for loop in Twig template?
...
From docs TWIG docs:
Unlike in PHP, it's not possible to break or continue in a loop.
But still:
You can however filter the sequence during iteration which allows you to skip items.
Example 1 (for huge lists you...
Rails 4 image-path, image-url and asset-url no longer work in SCSS files
Are we supposed to use something else aside from image-url and others in Rails 4? They return different values that don't seem to make sense. If I have logo.png in /app/assets/images/logo.png and I do the following, this is what I get:
...
Could not locate Gemfile
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
Not the answer you're looking for? Browse other questions t...
Volatile vs Static in Java
...riable for each Object. So, on the surface it seems there is no difference from a normal variable but totally different from static. However, even with Object fields, a thread may cache a variable value locally.
This means that if two threads update a variable of the same Object concurrently, and t...
Executing Batch File in C#
...ized as an internal or external command, program or batchfile" (Translated from dutch) Which is odd. Because when i run txtmanipulator from the commandline it executes perfectly.
– Wessel T.
Apr 1 '11 at 22:42
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Redirecting stdout to “nothing” in python
...it may fail to redirect the output of external child processes, the output from C extensions that print to C stdout directly, os.write(1, b'abc\n'). You need os.dup2(), to redirect at the file descriptor level, see stdout_redirected()
– jfs
Mar 22 '16 at 17:36
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When to use std::forward to forward arguments?
...rek's answer is very useful, but it doesn't completely answer the question from the title:
When to use std::forward to forward arguments?
In order to answer it, we should first introduce a notion of universal references. Scott Meyers gave this name and nowadays they are often called forwarding...
Match multiline text using regular expression
... This works (thanks!) I tried the pattern (?s)User Comments:\s*(.*) . From the answer of @Amarghosh I got the pattern User Comments: [\\s\\S]*. Among these is there a better or recommended way or are these just two different ways of doing the same?
– Nivas
...
How do I create a file and write to it in Java?
...and often is) used, but is not (conceptually) the right class for the job. From the docs: "PrintWriter prints formatted representations of objects to a text-output stream. " Bozho's answer is more correct, though it looks cumbersome (you can always wrap it in some utility method).
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