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python - What is wrong with the following program code, attempting to initialize a 4 x 4 matrix of integers?

What is wrong with the following program code, attempting to initialize a 4 x 4 matrix of integers? How should the ... [line, line, line, line] See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Android: Refresh ListView every minute

I've been reading all day threads regarding this issue I came up with a strategy but can't make it work I have a ... (); $mysqli->close(); ?> See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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for loop - what is wrong with my calculateSum function in java because it return ZERO

i am trying to calculate the sum of elements after the diagonal in 2D array but the problem is that the sum is always ... 0 1 2 the sum is: 15 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Clearing stack memory allocated in main()?

I've been calling heap pointers now for as long as I can remember, which in turn has caused me to think about ... in main() is it possible? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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r - Calculate and output the date of customer's first order

Data: DB <- data.frame(orderID = c(1,2,3,4,4,5,6,6,7,8), orderDate = c("1.1.12","1. ... plz give a solution which needs only little perfomance. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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django - How to post a array to views.py

I am using for loop in my template and for different id of each record i am using arrays {% for item in ... values inside my array in views.py See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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spring - Constructor Injection vs Setter Injection

I have read the following as one of the difference between constructor and setter injection. Can someone ... dependency is not available. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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excel - Conditional formatting from another cell

I would like to know how to conditionally control formats as below: Cell "A" can have several different inputs. ... ". Can someone help me? See Question&Answers more detail:os...

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java - PrimeFaces filling DataTable with List<Object[]>

I am trying to fill a DataTable with a List that was filled by a result queried by a native sql. Object ... will make me preciated. Thanks. See Question&Answers more detail:os...

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Remove extended selector in SASS

How to remove a particular selector. Required SASS .a { .b { .c { .d { .g { ... } } } .c ... than re-writing the same selector multiple times? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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java - Passing Color object between two views to be used in JButton background

I am trying to make a three tab desktop app where tab1: add/del button for adding/deleting 0-20 JButtons with tab2: ... areas (for me that is!) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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excel - Copy range from selected workbooks all sheets to working sheet

My excel SummarySheet (you can imagine how the rows and columns are...) No Drawing AnnualQuantity RawMatCost ... , _ MultiSelect:=True) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Creating a text file with java without using absolute path

following the question I asked before How to have my java project to use some files without using their absolute ... in some person's question. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - Pandas: Selecting rows and columns based on a subset of columns that contain a certain value

Let's say I have a dataframe with column names as follows: col_id_1, col_id_2, ..., col_id_m, property_1, ... a thing possible in pandas? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How To Get A Contour Of More/Less Of The Expected Area In OpenCV Python

I doing some contour detection on a image and i want to find a contour based on a area that i will fix in this ... is needed How Can I Do This ? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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zxing - ZXingObjc Integration IOS ,but didn't work at all

I have integrated the ZXingObjc framework,and ViewController as the RootViewController. the codes in ViewController.m ... Wish your help! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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unicode - SyntaxError: Non-ASCII character. Python

Could somebody tell me which character is a non-ASCII character in the following: Columns(str) - comma-seperated list ... know what is going on? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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php - Get page title & URL and echo in HTML

I am attempting to dynamically grab a page's title and URL and echo into HTML. Here's what I have: <ul> ... title via <?php echo $page_title?>? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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jquery - How to submit form based on certain condition?

I have one form data.php with following form structure. <div id="form-container" style="padding-top: ... button should be pressed automatically. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Firebase cloud function: problem with Promise.all(promise)

I loop throw a list of files in Firebase storage and I would like to modify a string while looping, Here is what ... : it still doesn't work:( See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How to Import module or a file from subfolder in Python?

Have a file test.py, located on?a Directory for eg /pyproject. and in /pyproject have a subdirectory called api ... to main test.py file? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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mysql query to parse string with unknown length

Sample pattern is as shown in example, i want to separate values before and after : (colon) Sample string pattern: 23:4,13 ... 6 12 1 15 3 45 6 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - node.js socket hang up

I try to catch a web site, but in this days have some problem. show the socket hang up, { Error: socket hang ... js:98:9) code: 'ECONNRESET' } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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BoofCV Android: Detect hand gestures

I want to detect 4 basic hand gestures of user in front of camera. When the user moves his hand in front ... ? What are the starting steps? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to call HTML file with css, js and images?

I am downloading zip file from server. In NSCachesDirectory I have the html file and I would like to ... :[NSURLRequest requestWithURL:url]]; See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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.net - DataTemplates and Generics

I have read nearly a thousand posts explaining that setting a closed generic type as DataType on a DataTemplate does ... time for a Dictionary. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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csv - How to automate subsetting multiple files using r

Hi guys am new to R and I am comfortable with creating subsets if i handle one file at a time .... But I ... . Any help appreciated... Thanks!!! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c - How is stack memory consumption calculated?

I need to calculate the stack memory consumption of my program. gcc's -fstack-usage only calculates the stack ... when the line is reached? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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