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itextsharp - Invalidpdfexception pdf header signature not found

I have some code that reads pdf files. The code fails at the line : iTextSharp.text.pdf.PRTokeniser. ... the pdf despite this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - cv2.imread does not read jpg files

I am working on a toolbox in Python where I use cv2.imread function to load images. While I am working with . ... jpg', os.R_OK) #output: True See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - Bootstrap 4: Navbar with logo and 2 rows

I am trying to create a website header that conforms to the schematic below using Bootstrap 4: The code I am ... still using the navbar class? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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741 views

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c# - Set different parts of a form field to have different fonts using iTextSharp

I'm not sure that this is possible but I figured it would be worth asking. I have figured out how to ... working on. Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to fill matplotlib bars with a gradient?

I would be very interested in filling matplotlib/seaborn bars of a barplot with different gradients exactly ... there alternative strategies? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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760 views

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c++ - writing a matrix into a single txt file with mpi

I have a huge matrix that I divided it into some sub matrices and I make some computation on it. After those ... matrix into a single text file. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Illegal Invocation error when console.log passed in a function

I am bit confused over this. Please find the code as below. var o={ printToConsole: function(f){ f(1); ... this console.log behaves in chrome? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - setTimeout for this.state vs useState

When I use class component, I have code: setTimeout(() => console.log(this.state.count), 5000); When I use ... timeout). Why does this happen? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java timer task schedule

From reading on Stack Overflow I've seen that many of you don't recommend using Timer Task. Hmmm... but I ... would like it to wait again. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - FindVisualChild reference issue

I have found and modified following code in order to export my dataGrid to a pdf document using iTextSharp class. ... I add this parameter ?. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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bash - Get java version number from python

I need to get the java version number, for example "1.5", from python (or bash). I would use: os.system(' ... sed. It should be in one line. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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active directory - Set callback for System.DirectoryServices.DirectoryEntry to handle self-signed SSL certificate?

I have an application replicating data from a directory service using typical System.DirectoryServices.DirectoryEntry ... -LdapConnection-and See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - Call function inside mongodb's aggregate?

Collection: [ { _id: "Foo", flag1: false, flag2: true, flag3: false }, { _id: "Bar", flag1: true, ... says the tire is either OK or BROKEN. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - WWW/UnityWebRequest POST/GET request won't return the latest data from server/url

I am creating a HoloLens app using Unity which has to take data from a REST API and display it. I am ... string _v; public string date; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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case insensitive - Git fetch a branch once with a normal name, and once with capital letter

I'm fetching for remote branches and stuck in some sort of a loop. I fetch once and get: $ ... /something-> origin/minorRelease/something See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cpu architecture - How does 32-bit address 4GB if 2³² bits = 4 Billion bits not Bytes?

Essentially, how does 4Gb turn into 4GB? If the memory is addressing Bytes, should not the possibilities be 2(32/8)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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879 views

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python - How to set justification on Tkinter Text box

Question How can I change the justification of specific lines in the ScrolledText widget in Tkinter? What was the ... unknown option "-justify" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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729 views

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python - Multi-factor authentication (password and key) with Paramiko

I've got the following code: import paramiko policy = paramiko.client.WarningPolicy() client = paramiko.client. ... very vague error message? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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578 views

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html - google maps height 100% of div parent

Is it possible make a google map height 100% of the parent div? I noticed that with the height 100%, the map is not ... ></div> </div> any idea? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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When is it necessary to circumvent Rust's borrow checker?

I'm implementing Conway's game of life to teach myself Rust. The idea is to implement a single- ... circumvent Rust's borrow restrictions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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646 views

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algorithm - Sign of a symbolic algebraic expression

Is there any algorithm that can find the sign of an arbitrary symbolic algebraic expression given in a "Tree - Form"? I ... sign(sqrt(2)-1) = ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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591 views

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c++ - Qt macro keywords cause name collisions

I am building an NCurses interface for my Qt project. I want to use CDK but I think the signals member of this ... I get CDK to work with Qt? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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656 views

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node.js - imagemagick with nodejs not working

I am trying to resize an image with node-imagemagick library, but it is not working. the code i am using ... .onexit (child_process.js:674:10) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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java - Persisting sha256 hash objects?

I need a Python/C/C++/Java implementation which can pause hashing ... . a591a6d40bf420404a011733cfb7b190d62c65bf0bcda32b57b277d9ad9f146e See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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Detecting MIME type in PHP

I'm looking for the best (possible on most PHP 5.2 installs and still actively developed) way to detect a files ... Do I have any other options? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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503 views

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c# - In an If-Else Statement for a method return, should an Else be explicitly stated if it can instead be implicitly followed?

I have a method that checks certain things and returns a Boolean based on those checks. It involves a single branching ... cond5) { return 5; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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537 views

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android - How to Handle backPress with Fragment

i have Fragment Activity With contatin navigation drawer.after clicking navigation drawer item it open a Fragment 1, ... go back Fragment 1. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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774 views

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excel - VBA: Else without If Error

I'm trying to run the following code, but I keep getting the Else without If Error in the first sub. The ... Nothing Set FSO = Nothing End Sub See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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