AAC | Android Architectural Components | Architecture library
kandi X-RAY | AAC Summary
kandi X-RAY | AAC Summary
This is sample of 4 Architectural components, Android released this year Google IO 2017. Docs of Android App Architectural Components
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Click the user
- Gets the app database
- Gets the first name
- Sets up UI elements
- Initialize the activity
- Get instance of UserLiveData
- Change the value
- Set up all users
- Get all user
- Sets up the edit fields
- Initializes the UserModel
- Sets the state of the life cycle
- Sets the activity to be saved
- On create
- Called when the container is destroyed
- On pause
- This method is called when the application is resume
- Invoked when the container is started
- On stop
AAC Key Features
AAC Examples and Code Snippets
Community Discussions
Trending Discussions on AAC
QUESTION
I recently came across this problem:
You are given two strings, s1 and s2, comprised entirely of lowercase letters 'a' through 'r', and need to process a series of queries. Each query provides a subset of lowercase English letters from 'a' through 'r'. For each query, determine whether s1 and s2, when restricted only to the letters in the query, are equal. s1 and s2 can contain up to 10^5 characters, and there are up to 10^5 queries.
For instance, if s1 is "aabcd" and s2 is "caabd", and you are asked to process a query with the subset "ac", then s1 becomes "aac" while s2 becomes "caa". These don't match, so the query would return false.
I was able to solve this in O(N^2) time by doing the following: For each query, I checked if s1 and s2 would be equal by iterating through both strings, one character at a time, skipping the characters that do not lie within the subset of allowed characters, and checking to see if the "allowed" characters from both s1 and s2 match. If at some point, the characters don't match, then the strings are not equal. Otherwise, the s1 and s2 are equal when restricted only to letters in the query. Each query takes O(N) time to process, and there are N queries, for a total of O(N^2) time.
However, I was told that there was a way to solve this faster in O(N). Does anyone know how this might be done?
...ANSWER
Answered 2022-Mar-28 at 11:30The first obvious speedup is to ensure your set membership test is O(1). To do that, there's a couple of options:
- Represent every letter as a single bit -- now every character is an 18-bit value with only one bit set. The set of allowed characters is now a mask with these bits ORed together and you can test membership of a character with a bitwise-AND;
- Alternatively, you can have an 18-value array and index it by character (
c - 'a'would give a value between 0 and 17). The test for membership is then basically the cost of an array lookup (and you can save operations by not doing the subtraction -- instead just make the array larger and index directly by character.
The next potential speedup is to recognize that any character which does not appear exactly the same number of times in both strings will instantly be a failed match. You can count all character frequencies in both strings with a histogram which can be done in O(N) time. In this way, you can prune the search space if such a character were to appear in the query, and you can test for this in constant time.
Of course, that won't help for a real stress-test which will guarantee that all possible letters have a frequency matched in both strings. So, what do you do then?
Well, you extend the above premise by recognizing that for any position of character x in string 1 and some position of that character in string 2 that would be a valid match (i.e the same number of character x appears in both strings up to their respective positions), then the total count of any other character up to those positions must also be equal. For any character where that is not true, it cannot possibly be compatible with character x.
Let's start by thinking about this in terms of a technique known as memoization where you can leverage precomputed or partially-computed information and get a whole lot out of it. So consider two strings like this:
QUESTION
I'm using docker-compose to launch a commandbox lucee container and a mysql contianer.
I'd like to change the web root of the lucee server, to keep all my non-public files hidden (server.json etc, cfmigrations resources folder)
I've followed the docs and updated my server.json
https://commandbox.ortusbooks.com/embedded-server/server.json/packaging-your-server
ANSWER
Answered 2022-Feb-24 at 15:19You're using a pre-warmed image
QUESTION
I'm trying to add rotation metadata to the video recorded from RTSP stream. All works fine until I try to run recording with segment format. My command looks like this:
...ANSWER
Answered 2022-Feb-11 at 10:03I found out it has been resolved in
and it works fine in ffmpeg 5.0. You can also apply this patch to 4.4.
QUESTION
I am writing code that modifies a 3 letter sequence at all 3 positions separately by exchanging that position with one of the following A, T, C, or G.
I have been able to create 3 lists where the initial element has either the 1st, 2nd, or 3rd position modified to one of the other 3 different letters.
I have written a dictionary that encodes each key (amino acid in this case) and it's corresponding codon sequences (which would be the elements I am modifying). .
Now, I aim to check each modified list's elements against this dictionary, and see which dict key they correspond to. I wish see if changes in the initial element change the resulting key associated with it.
I am unable to figure out how to proceed; how can I get the corresponding key for the values of my modified lists?
Here is my code so far:
...ANSWER
Answered 2022-Feb-04 at 22:06At the following line:
QUESTION
I used version 2.4.0-alpha04 to conveniently use multi-backstack of navigation. (develop docs)
But I got the following error:
...ANSWER
Answered 2021-Jul-31 at 20:28in your app level build.gradle file replace
QUESTION
I have here a phrase AAC Barcode Description that regex should match.
The problem is sometimes I have underscore, symbols etc... like
- AAC Barcode + Descriptions
- AAC Barcode + Description
- AAC Barcode & Descriptions
- AAC Barcode and Description
REGEX
...ANSWER
Answered 2022-Jan-17 at 00:29You can use
QUESTION
I'm having regularly issue with hvc1 videos getting an inconsistent number of frames between ffprobe info and FFmpeg info, and I would like to know what could be the reason for this issue and how if it's possible to solve it without re-encoding the video.
I wrote the following sample script with a test video I have
I split the video into 5-sec segments and I get ffprobe giving the expected video length but FFmpeg gave 3 frames less than expected on every segment but the first one.
The issue is exactly the same if I split by 10 seconds or any split, I always lose 3 frames.
I noted that the first segment is always 3 frames smaller (on ffprobe) than the other ones and it's the only consistent one.
Here is an example script I wrote to test this issue :
...ANSWER
Answered 2022-Jan-11 at 22:08The source of the differences is that FFprobe counts the discarded packets, and FFmpeg doesn't count the discarded packets as frames.
Your results are consistent with video stream that is created with 3 B-Frames (3 consecutive B-Frames for every P-Frame or I-Frame).
According to Wikipedia:
I‑frames are the least compressible but don't require other video frames to decode.
P‑frames can use data from previous frames to decompress and are more compressible than I‑frames.
B‑frames can use both previous and forward frames for data reference to get the highest amount of data compression.
When splitting a video with P-Frame and B-Frame into segments without re-encoding, the dependency chain breaks.
- There are (almost) always frames that depends upon frames from the previous segment or the next segment.
- The above frames are kept, but the matching packets are marked as "discarded" (marked with
AV_PKT_FLAG_DISCARDflag).
For the purpose of working on the same dataset, we my build synthetic video (to be used as input).
Building synthetic video with the following command:
QUESTION
I am trying to use the video_player, but I am getting the below error. I have also added an MRE (minimum reproducible example).
I have used an emulated Pixel 4, an emulated Pixel 4 XL, and an emulator Pixel 5 with the Android Studio Beta, but none of them worked.
The below error was when I was using a Pixel 4 XL, but the error was the same with all of them.
Error:
...ANSWER
Answered 2022-Jan-11 at 08:53It can be a bug of that Flutter package, indeed. Have you tried to create an issue in GitHub of that package?
Secondly, during my development, I see several times when emulators just fail and real devices always work. The solution I used is - simply to do not test them on simulators. Real users never use simulators, aren't they?
It can be a bug of the library when running on x86 arch (the arch simulators use). Then, nobody with a real device (arm arch) will ever see the bug.
Thirdly, what about trying to use "cloud real devices" to test whether they work on real Pixel devices that you are worried about. There are many platforms that host some real devices and you can connect to them via a webpage and test your app.
QUESTION
To make it easy to visualize, below is the following Record lookup table.
I just can't seem to find anywhere online where it tells you which of these are supposed to also contain charset=utf-8.
Should I just assume it's anything similar to text?
Take a look:
...ANSWER
Answered 2022-Jan-10 at 05:00MDN Says:
For example, for any MIME type whose main type is text, you can add the optional charset parameter to specify the character set used for the characters in the data. If no charset is specified, the default is ASCII (US-ASCII) unless overridden by the user agent's settings. To specify a UTF-8 text file, the MIME type text/plain;charset=UTF-8 is used.
So, for anything based on text/... you can optionally add the charset.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types#structure_of_a_mime_type
The following update to contentType() function demonstrates one solution.
QUESTION
I have been learning buffer overflows and i am trying to execute the following command through shellcode /bin/nc -e /bin/sh -nvlp 4455. Here is my assembly code:
ANSWER
Answered 2021-Dec-29 at 14:12As you can see in strace, the execve command executes as:
execve("/bin//nc", ["/bin//nc", "/bin//nc-e //bin/bash -nvlp 4455"], NULL) = 0
It seems to be taking the whole /bin//nc-e //bin/bash -nvlp 4455 as a single argument and thus thinks it's a hostname. In order to get around that, the three argv[] needed for execve() is pushed seperately.
argv[]=["/bin/nc", "-e/bin/bash", "-nvlp4455"]
These arguments are each pushed into edx, ecx, and ebx. since ebx needs to be /bin/nc, which was already done in the original code. we just needed to push 2nd and 3rd argv[] into ecx and edx and push it into stack. After that we just copy the whole stack into ecx, and then xor edx,edx to set edx as NULL.
Here is the correct solution:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install AAC
You can use AAC like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the AAC component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
