t3 | key words | Frontend Framework library
kandi X-RAY | t3 Summary
kandi X-RAY | t3 Summary
Once coding use three terminal. key words: react-native, antd-mobile (antdm), redux, immutablejs. because I want to adapt three terminal, so I fork a copy from antd-mobile to create antdm and fix a little bug.
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QUESTION
In Typescript, what is the difference between types T1-T4:
...ANSWER
Answered 2021-Jun-15 at 23:46typeof is a way to refer to the type of a value. example:
QUESTION
I have been studying and learning PHP and MySQL and I have started a system that I'm developing for a friend's little school and to help me to improve my learning. I basically have in this case a table with the names of the students (tb_std) and another with the names of the teachers (tb_tch). The work is to distribute these students among the teachers in a new table, which is the way I think it will work better (tb_final).
- I basically need each student to have a randomly chosen teacher so that the distribution is numerically even among the teachers.
In this example, I have 7 teachers and 44 students. Using SELECT query I did the operations to find out how many students would be for each teacher (add/division/mod), but how to make this draw to play in this new table I have no idea where to start.
...ANSWER
Answered 2021-Jun-14 at 14:50You can solve this by next (a bit a complicate) query using window functions:
QUESTION
I have a SQL query which returns an array.
...ANSWER
Answered 2021-Jun-14 at 14:16SQL SUM
function return type is mapped to Long
for integral-type columns in Java, so you'll probably need to change the list to List
and process it then.
See for example https://docs.oracle.com/cd/E19226-01/820-7627/bnbvy/index.html
QUESTION
I am using a table as below:
Period County Quarter company product 01/01/2020 DE 01/01/2020 WKDM2 Product1 01/01/2020 DE 01/01/2020 2GFSDG37 Product1 01/02/2020 DE 01/01/2020 ORD56 Product2 01/03/2020 DE 01/01/2020 GFDS Product3 01/03/2020 DE 01/01/2020 24GFDSGF2 Product1 01/03/2020 DE 01/01/2020 2GFSDG37 Product3 01/03/2020 DE 01/01/2020 24GSFD1 Product1 01/04/2020 DE 01/04/2020 2GFSDG37 Product4 01/04/2020 DE 01/04/2020 23GSFDG5 Product6 01/04/2020 DE 01/04/2020 24GSFD1 Product1 01/05/2020 DE 01/04/2020 23GSDF6 Product3 01/06/2020 DE 01/04/2020 24GSFD1 Product8I tried to extract wanted data but this is not working as expected, i have bad count for Company Q & Product Q (code to reproduce):
...ANSWER
Answered 2021-Apr-15 at 20:31This solution feels over kill, but it does work.
QUESTION
I am new to MIPS assembly. I am trying to convert a java code to MIPS code but I can't figure it out that how can I load and store double values in MIPS. I get this error "address not aligned on doubleword boundary 0x10010001". Here is the java code:
...ANSWER
Answered 2021-Jun-14 at 17:49Use syscall function code 3 to print doubles (not function code 2 — that's for single float).
Use mov.d
to copy one register to another, e.g. into $f12
for sycalls (then no need to load 0.0 into $f0
).
(Also, use l.d
instead of ldc1
.)
The loop:
loop isn't a loop (there is no backward branch for it).
As @Peter says, your scaling/offsets are not properly accounting for the size of double, which is 8. Scaling needs to multiply by 8 (shift by 3, not 2), and offsets need to be multiples of 8.
Your first loop, when its done, should not EXIT the program but rather continue with the next statement (i.e. the printing loop).
For this statement numbers[i+2] = numbers[i+1] + numbers[i];
there are two loads and one store as array references, whereas the assembly code is doing 3 loads and no store.
You use $s5
, but never put anything in it.
The comparison of numbers[i+1] < 150
has to be done in (double) floating point, whereas the assembly code is attempting this in integer registers.
Floating point comparison is done using c.eq.d
, c.lt.d
, or c.le.d
. Like with integer compares, constants need to be in registers before the compare instruction. 150.0 would best come directly from memory (as a double constant) before the loop and remain there for the loop duration (or you can move integer 150 into a floating point register and convert that to double (cvt.w.d
)).
Conditional branches on floating point compare conditions use either bc1t
or bc1f
(depending on the sense you want).
The C-like pseudo code probably doesn't run properly. The exit condition for the first loop is suspect — it will probably run off the end of the array (depending on its initial data values).
Translating non-working C code into assembly is a recipe for frustration. Suggest getting it working in C first; run it to make sure it works.
QUESTION
I have a div container that will layout each item evenly for the full width of the screen.
I would like to adjust the BACK div behind the selected input dynamically. I know in theory how to do it: do a transform: translate to #after of the BACK div. But I have no idea how to calculate the correct px value, depending on what input tag has been selected.
The codepen to view this is available here: https://codepen.io/depechie/pen/oNZagLa
The desired end result visually should be like following picture. So the BACK div ( the blue outline ) should be placed behind the selected input.
...ANSWER
Answered 2021-Jun-14 at 10:06Simply add a border on the selected element ?
QUESTION
I am writing a windows service to get some data from my database, then send it to my provider and get the response. I have some issues which make me simulate a console application to test my code.
Here is my code:
...ANSWER
Answered 2021-Jun-14 at 09:23Create the HttpClient
before trying to use it, by using the new
keyword.
QUESTION
I would like to create a CloudFormation stack with the CLI command provided below:
...ANSWER
Answered 2021-Jun-14 at 01:04CloudFormation (CFN) is not going to take your chaklader.pem
and create a pair key in AWS. You have to do it before hand yourself. And you can't use CFN for that as it is not supported, unless you will program such a logic yourself using custom resource.
The easiest way is to create or import the key "manually" using AWS Console, SDK or CLI. Then you can reference its name in your template.
QUESTION
I am trying to understand the constructor of a std::thread
but fail to understand how parameter types are represented/handled. Judging from cppreference, a simplified constructor could be sketched as follows:
ANSWER
Answered 2021-Jun-13 at 14:24Std thread makes a copy (or move) into a decayed version of the arguments type. The decayed version is not a reference nor const nor volatile nor an array (arrays and functions become pointers).
If you want an lvalue reference argument, use a reference wrapper. The called function in the thread ctor gets an rvalue otherwise; decay copy just determines how the rvalue you are passed in the thread function is constructed from your std thread argument.
QUESTION
I have Amazon Aurora for MySQL t3.db.medium instances
. I would like to scale down to t3.db.small
.
If I modify the instance settings in AWS console, will my DB data be preserved? So can I scale down without service interruption? I think I should be able to do this, but I just wanna make sure. There is prod instance involved.
I have the same question about Elastic Cache (AWS redis). Can I scale that down without service interruption?
...ANSWER
Answered 2021-Jun-11 at 12:07According to Docs, there is table(DB instance class) which tells which settings can be changed, you can change your instance class for your aurora, as a note An outage occurs during this change.
For redis
according to docs, you can scale down node type of your redis cluster (version 3.2 or newer). During scale down ElastiCache dynamically resizes your cluster while remaining online and serving requests.
In both the cases your data will be preserved.
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