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def extract_valid_libs(filepath):
"""Evaluate syslibs_configure.bzl, return the VALID_LIBS set from that file."""
# Stub only
def repository_rule(**kwargs): # pylint: disable=unused-variable
del kwargs
# Populates VALID_LIBS
with ope
Community Discussions
Trending Discussions on libs
QUESTION
I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);
.
ANSWER
Answered 2021-Jun-16 at 03:07I had used document.getElementById('1').contentWindow.jQuery('#left').jstree(true);
to get instance from iframe with id='1'. In order to listen to right iframe(with id='2') if any menu has been clicked, I used document.getElementById('2').contentWindow.jQuery('#right').on("changed.jstree",function(e,data){})
. I get the instance of left iframe within this function. By using this instance, I has deselect previous selection, select current selection, and open children of selected menu.
index-12.html
QUESTION
I built an app using Django 3.2.3., but when I try to settup my javascript code for the HTML, it doesn't work. I have read this post Django Static Files Development and follow the instructions, but it doesn't resolve my issue.
Also I couldn't find TEMPLATE_CONTEXT_PROCESSORS
, according to this post no TEMPLATE_CONTEXT_PROCESSORS in django, from 1.7 Django and later, TEMPLATE_CONTEXT_PROCESSORS
is the same as TEMPLATE
to config django.core.context_processors.static
but when I paste that code, turns in error saying django.core.context_processors.static
doesn't exist.
I don't have idea why my javascript' script isn't working.
The configurations are the followings
Settings.py
...ANSWER
Answered 2021-Jun-15 at 18:56Run ‘python manage.py collectstatic’ and try again.
The way you handle static wrong, remove the static dirs in your INSTALLED_APPS out of STATIC_DIRS and set a STATIC_ROOT then collectstatic again.
Add the following as django documentation to your urls.py
QUESTION
I have been blocked on this problem for several days. I have bootstrap 3.3.7 in the project root folder. I am rendering some buttons in the django template that should open modal windows when clicked. But the modal functionality is not working. I am following the examples shown on this page: https://www.quackit.com/bootstrap/bootstrap_3/tutorial/bootstrap_modal.cfm
Here is the template code:
...ANSWER
Answered 2021-Jun-15 at 21:53 {% load static %}
{% load static %}
// add this.
QUESTION
In C++20, we got the capability to sleep on atomic variables, waiting for their value to change.
We do so by using the std::atomic::wait
method.
Unfortunately, while wait
has been standardized, wait_for
and wait_until
are not. Meaning that we cannot sleep on an atomic variable with a timeout.
Sleeping on an atomic variable is anyway implemented behind the scenes with WaitOnAddress on Windows and the futex system call on Linux.
Working around the above problem (no way to sleep on an atomic variable with a timeout), I could pass the memory address of an std::atomic
to WaitOnAddress
on Windows and it will (kinda) work with no UB, as the function gets void*
as a parameter, and it's valid to cast std::atomic
to void*
On Linux, it is unclear whether it's ok to mix std::atomic
with futex
. futex
gets either a uint32_t*
or a int32_t*
(depending which manual you read), and casting std::atomic
to u/int*
is UB. On the other hand, the manual says
The uaddr argument points to the futex word. On all platforms, futexes are four-byte integers that must be aligned on a four- byte boundary. The operation to perform on the futex is specified in the futex_op argument; val is a value whose meaning and purpose depends on futex_op.
Hinting that alignas(4) std::atomic
should work, and it doesn't matter which integer type is it is as long as the type has the size of 4 bytes and the alignment of 4.
Also, I have seen many places where this trick of combining atomics and futexes is implemented, including boost and TBB.
So what is the best way to sleep on an atomic variable with a timeout in a non UB way? Do we have to implement our own atomic class with OS primitives to achieve it correctly?
(Solutions like mixing atomics and condition variables exist, but sub-optimal)
...ANSWER
Answered 2021-Jun-15 at 20:48You shouldn't necessarily have to implement a full custom atomic
API, it should actually be safe to simply pull out a pointer to the underlying data from the atomic
and pass it to the system.
Since std::atomic
does not offer some equivalent of native_handle
like other synchronization primitives offer, you're going to be stuck doing some implementation-specific hacks to try to get it to interface with the native API.
For the most part, it's reasonably safe to assume that first member of these types in implementations will be the same as the T
type -- at least for integral values [1]. This is an assurance that will make it possible to extract out this value.
... and casting
std::atomic
tou/int*
is UB
This isn't actually the case.
std::atomic
is guaranteed by the standard to be Standard-Layout Type. One helpful but often esoteric properties of standard layout types is that it is safe to reinterpret_cast
a T
to a value or reference of the first sub-object (e.g. the first member of the std::atomic
).
As long as we can guarantee that the std::atomic
contains only the u/int
as a member (or at least, as its first member), then it's completely safe to extract out the type in this manner:
QUESTION
I have two select form with submit button, I need to get the result of selected value for example
first select form having colours as an option and second contains another things.
and i have some items as div....red flower , red fish.
if i select red from first form its shows red value div and in second form if i select flower it should display red flower only but it's shows everything under the value red. And these all thing must work only when i submit the search button. I have attached jsfiddle below. Code:
...ANSWER
Answered 2021-Jun-15 at 19:59This is not so simple as I initially thought
QUESTION
I am new to jQuery and built this code that I modified to make it work right away in fiddle etc.
When the select changes, it is supposed to create a table but it does not do anything. However, if I place the
it works. Any idea why?
...ANSWER
Answered 2021-Jun-15 at 14:21Divs and selects aren't self-closing elements. They probably don't exist with respect to jQuery except where the browser attempts to close them for you. Fix that and it works.
QUESTION
on click clone li with add it under li with a class clicked and on click on different li the previous clone should get removed
for eg: what i would like to achieve is on the click of
third
third
&& when i click on other li like Fourth
the old li with class clicked should get removed and new li of Fourth
should get generated
...ANSWER
Answered 2021-Jun-15 at 14:01When you clone the element into the ul
(the same, but doesn't matter), give it the clicked
class with .addClass
at the same time.
You can then remove all the ".clicked" elements when you add your next entry.
QUESTION
ANSWER
Answered 2021-Jun-15 at 12:29You're defining the interval like so:
QUESTION
This is my code:
...ANSWER
Answered 2021-Jun-15 at 12:20React is a framework that is state-based - the state informs the render of the DOM. Trying to use querySelector and its equivalent won't work like you think it will.
So here's an example of this working.
We set the state to be the index of the span (initially nothing).
handleClick
which is attached to thediv
(or would be attached to yourScale
element) grabs the data id attribute from the span and adds it to the state.This triggers the page to re-render, the spans get rebuilt, and depending on the state the
selected
class gets added.
There is no other DOM manipulation going on. React does all that heavy lifting for you.
QUESTION
I have a pair of iterator, and I would like to use ranges::views::filter(some_predicate)
on it (with the pipe operator). AFAIU I should first convert my pair of iterator into a view. I tried to use ranges::subrange(first, last)
to do so, but I’m getting horrible error messages.
Note1: I’m using C++14 and range-v3 version 0.9.1 (the last version compatible with gcc-5.5). If the solution differs when using C++17/20 and/or when using C++20 std::ranges, I’m also interested to know what changed.
Note2: I find the documentation of range-v3 severely lacking, so I’m using cppreference.com. If you know a better documentation, I’m very interested.
EDIT:
In my real code, I’m wrapping a java-style legacy iterator (that has a next()
method instead of operator++
/operator*
. I’m wrapping them in a C++-compatible wrapper. Then I tried to convert that wrapper into a view, and finally filter it. I reproduce a minimal example on godbolt. This use iterator_range
as suggested, but it still doesn’t compile (see the second edit below).
ANSWER
Answered 2021-Apr-08 at 16:24In ranges-v3, there is iterator_range
which you can use to wrap the iterators into a range object.
In C++20, you can use std::span
to wrap those iterators into an range object
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