Questions tagged [memo]
144 questions
5
votes
1 answer
use React.memo with mapped collection
Somehow the react.memo (or the hook version) wont work when the components are "generated" by a map.
code example: https://codesandbox.io/embed/react-memo-example-iuqf4
const Item = ({ step }) =>
{step.name}
;
const MemoItem =…
pim
- 53
- 1
- 1
- 5
5
votes
1 answer
removing last blank line in memo
i searched google but can't seem to find a working solution.
the situation is unique. i need to "add" lines with a comment at various times. whenever i press the F9 key, a line number will dispaly followed by a colon ":" char and then i enter some…
johnm2
- 143
- 3
- 8
4
votes
0 answers
React memo prevProps is giving initial value always, not actual previous props
Main component:
const AProfileFilter = ({ data = []) => {
const [getData, setData] = useState([]);
const [getStore, setStore] = useState([]);
useEffect(() => {
setData(prepareFilterData(data));
}, [data]);
…
Jayesh Naghera
- 319
- 3
- 13
4
votes
0 answers
How does React memoization work under the hood?
I'm curious how React memoization works under the hood.
Specifically, I want to understand the tradeoff between runtime performance gains and memory usage. I want to know what is that total memory usage, and what is the behaviour of the memoization…
lcushman
- 73
- 4
4
votes
1 answer
Delphi - Get the whole word where the caret is in a memo
I need to be able to select the whole word of a TMemo if the caret is directly adjacent or in a word in the memo.
Consider the following (where | is a caret)
Here is some text| = Select text
Here is so|me text = Select some
|Here is some text =…
Simon
- 9,197
- 13
- 72
- 115
4
votes
0 answers
How to get which dependence cause useCallback / useMemo recalculate?
By using useMemo / useCallback hook in React, sometimes I find many unexpected render causing by useMemo / useCallback return value.
As I use React.memo to reduce React function component useless render, by React.memo second param, I could control…
tomision
- 964
- 9
- 22
4
votes
1 answer
Create Memo in R Markdown
I am trying to create the following memo format in R Mardown:
https://texblog.org/2012/03/07/writing-a-memo-in-latex/
---
csl: texMemo.csl
\memoto{someone}
output: pdf_document
---
I'm not sure where to put the text, whether it does in the YAML…
Vincent Risington
- 167
- 8
4
votes
3 answers
How to persist values after a memory warning viewDidUnload
My problem is when I use the camera UIImagePicker and the phone is low on memory. It throws a memory warning and unloads the view and then reloads.
I know this is a very common problem and many questions are already in SO. I'm not going into this.…
carbonr
- 6,049
- 5
- 46
- 73
3
votes
1 answer
Buggy cursor in FireMonkey (Delphi XE2)
Delphi XE2 update 3, Windows 7.
I have a memo, it's cursor is crIBeam. But when I move a mouse over the memo the cursor changes to crDefault and back. The swap repeats vary fast. I took a picture with the crDefault cursor but crIBeam must be…
maxfax
- 4,281
- 12
- 74
- 120
3
votes
1 answer
Delphi - Find text in large TMemo
I have a TMemo which contains quite a lot of texts, 80M (about 400K lines).
The TMemo is set with WordWrap = FALSE, there is no need to find texts that wrapped in 2 lines.
I need a fast way to find a text, from the beginning, and also find next.
So,…
Kawaii-Hachii
- 1,017
- 7
- 22
- 36
3
votes
2 answers
Microsoft Access memo datatype to MySQL Datatype
What datatype in MySQL would be best to use for data that was in Memo on Microsoft Access?
suryll
- 103
- 2
- 6
3
votes
1 answer
How to avoid re-renders in React when using conditional Render and children node prop
I have a component that I reuse most of its logic.
I'm looking to avoid re-renders on its children components which happen every time I hover over the parent:
const ReusableComponent = ({ conditional }) => {
const [isHovered, setIsHovered] =…
ricardowgomes
- 31
- 1
3
votes
1 answer
How to add multiple lines from a TMemo component to a MS Access database?
I got an ADO Database with a table named t_codemeaning, below are the table structure :
t_codemeaning
codemenaing_code AS Text
codemenaing_title AS Text
codemenaing_description AS Text
I add all of table in my ADOQuery1.
I click a button…
Galvion
- 1,353
- 7
- 23
- 35
3
votes
0 answers
Magento partial refund programmatically
How can i create partial create memo? i.e. if total order value is £50 and I want to create a credit memo of £10. I am using the below code to create credit memo:
function createCreditMemo($orderId) {
$order =…
Hum
- 531
- 2
- 12
- 30
2
votes
4 answers
Is there any way to disable selecting of text in a memo control?
Is there any way to disable selecting of text in a memo control because it's very anoying.
The memo is Read Only.
Little Helper
- 2,419
- 9
- 37
- 67