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When I run this bash script : if [ [$EUID -ne 0] ]; then echo "This script must be run as root" 1>&2 exit ... 15: [: Illegal number: [ Do you see any problem ? Question&Answers:os...

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

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362 views

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Play an Animated GIF in python with tkinter

I am wanting to create a virtual pet style game using python3 and tkinter. So far I have the main ... see the full project:VirtPet_Python Thanks in advance! Question&Answers:os...

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

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c++ - std::string in C#?

I thought the problem is inside my C++ function,but I tried this C++ Function in C++ dll: bool __declspec( ... works great,but with std::string it doesnt work. Question&Answers:os...

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

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217 views

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sql - Ms Access Query: Concatenating Rows through a query

Suppose I have table in Ms Access with following information: ColumnA ColumnB 1 abc 1 pqr 1 xyz 2 efg 2 hij ... a query. Can someone help me attain this? Question&Answers:os...

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

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php - Best way to parse bbcode

I'd like to work on a bbcode filter for a php website. (I'm using cakephp, it would be a bbcode helper) I ... parser? Thank you and sorry for my bad english... Question&Answers:os...

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

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c# - export to Excel from a list with EPPLUS

i′m trying to export a list to Excel in c# with EPPLUS, when i execute the program don′t give me errors, but when ... but i can′t se what is wrong, please help. Question&Answers:os...

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

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dart - Error: The instance member ... can't be accessed in an initializer

Why does this code: class _SequentialTextPageState { String jsonTextPref = 'seqtext'; int jsonTextSuff = 10; ... between String and int is correct? Question&Answers:os...

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

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2d - Drawing Isometric game worlds

What is the correct way to draw isometric tiles in a 2D game? I've read references (such as this ... Are there advantages or disadvantages to either method? Question&Answers:os...

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

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How to define a circle shape in an Android XML drawable file?

I have some problems finding the documentation of the definitions of shapes in XML for Android. I would like to define ... to make a circle out of an Arc. Question&Answers:os...

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

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deferred - AngularJS : Where to use promises?

I saw some examples of Facebook Login services that were using promises to access FB Graph API. Example #1: this.api ... use $q service? And how does it work? Question&Answers:os...

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

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javascript - What's the difference between returning value or Promise.resolve from then()

What is the difference between: new Promise(function(res, rej) { res("aaa"); }) .then(function(result) { return ... (function(result) { console.log(result); }); Question&Answers:os...

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

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Test if remote TCP port is open from a shell script

I'm looking for a quick and simple method for properly testing if a given TCP port is open on a remote ... from) SunOS 5.10 Generic_139556-08 i86pc i386 i86pc Question&Answers:os...

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

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WPF Trigger won't set property if set in Element

This behavior seems incredibly odd to me, and I assume I am doing something wrong to get it. I have a ... are explicitly defined? Isn't that its purpose? Question&Answers:os...

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

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111 views

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Android Studio - Emulator - eglSurfaceAttrib not implemented

I have created an application with android studio, never change a single word in any file. when trying ... the package-private method in android.widget.ListView Question&Answers:os...

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

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java - What is the difference between a local variable, an instance field, an input parameter, and a class field?

What is the difference between a local variable, an instance field, an input parameter, and a class field with respect to a simple Java program? Question&Answers:os...

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

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python - How to stop Tkinter Frame from shrinking to fit its contents?

This is the code that's giving me trouble. f = Frame(root, width=1000, bg="blue") f.pack(fill=X, expand ... size. Is there a way to prevent that from happening? Question&Answers:os...

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

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mysql - Can a table field contain a hyphen?

I have a table in a MySQL table with a fieldname 'product', and want to rename it to 'ds-product'. The CMS ... any way I can have a field called ds-product? Question&Answers:os...

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

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739 views

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c# - out of memory Image.FromFile

Why is it that I'm getting an out of memory error? Thank you if (File.Exists(photoURI)) { FileStream fs = new ... img = Image.FromStream(fs); fs.Close(); } Question&Answers:os...

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

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411 views

1 answer

java - Swing's KeyListener and multiple keys pressed at the same time

is there any conventional way in swing of tracking down the events, when two keyboard keys are pressed at the same time ... or not. But it looks like a kludge. Question&Answers:os...

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

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1.4k views

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error handling - Python giving FileNotFoundError for file name returned by os.listdir

I was trying to iterate over the files in a directory like this: import os path = r'E:/somedir' for filename in ... directory: 'foo.txt' So what is wrong here? Question&Answers:os...

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

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197 views

1 answer

c# - How do I display a popup from a WebBrowser in another window I created?

I am trying to implement a simple web browser control in one of my apps. This is to help integrate a web ... MDIParent property of a form)? Thanks in advance. Question&Answers:os...

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

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169 views

1 answer

python - creating spark data structure from multiline record

I'm trying to read in retrosheet event file into spark. The event file is structured as such. id, ... idKey,line)) event_data = sc.parallelize(newevent_list) Question&Answers:os...

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

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62 views

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java - Adding image to Jbutton with foreground label

Friends, i m trying add image to my Jbutton using seticon method but it hide the text label on the button. ... ()/graphics, its simple frame in main method. Question&Answers:os...

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

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491 views

1 answer

vb.net - How to use parameters "@" in an SQL command in VB

I have this code to update my SQL database from data in a textbox, in VB. I need to use parameters in case the ... the textbox when I run the code, it crashes. Question&Answers:os...

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

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96 views

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c++ - What does std::match_results::size return?

I'm a bit confused about the following C++11 code: #include <iostream> #include <string> #include <regex> int main ... instead I get 1. Am I missing something? Question&Answers:os...

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

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390 views

1 answer

windows - FORFILES date -after- (date calc in cmd file)

I'd like to use FORFILES in a cmd file, to act on all files after a given date thru "today". I can use ... be able to calculate that date within the cmd file. Question&Answers:os...

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

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94 views

1 answer

java - Missing return statement for if/else statement

public int checkGuess(int g, int randomnumber){ number=g; this.randomnumber= randomnumber; if (number == ... the error comes up for the last bracket Question&Answers:os...

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

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590 views

1 answer

comparison - How to compare string and integer in python?

I have this simple python program. I ran it and it prints yes, when in fact I expect it to not print anything ... 14): print "yes" What am I doing wrong? Question&Answers:os...

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

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