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wpf - C# Change A Button's Background Color

How can the background color of a button once another button is pressed? What I have at the moment is: ButtonToday. ... ; And it's not working. See Question&Answers more detail:os...

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redux - Flutter setState() or markNeedsBuild() called when widget tree was locked

I am having trouble finding the source to this exception, ... See Question&Answers more detail:os...

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python - Why does list ask about __len__?

class Foo: def __getitem__(self, item): print('getitem', item) if item == 6: raise IndexError return item**2 def ... ? (CPython 3.6.0 on Linux) See Question&Answers more detail:os...

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html - How can I include special characters in query strings?

URL http://localhost/mysite/mypage?param=123 works fine. However, if I want to put some special characters in ... do I resolve this issue? See Question&Answers more detail:os...

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sql - Average of multiple columns

I have a table called Request and the data looks like: Req_ID R1 R2 R3 R4 R5 R12673 2 5 3 7 10 R34721 3 ... the average? Where am I doing wrong. See Question&Answers more detail:os...

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opencv - iOS:Retrieve rectangle shaped image from the background image

I am working on an implementation where I have a rectangle shaped image in an big background image. I am trying ... return image; } Thank you. See Question&Answers more detail:os...

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go - Decoding generic JSON objects to one of many formats

I am working on a general JSON based message passing protocol in Go. What I would like to do is have a ... formats that I am just missing. See Question&Answers more detail:os...

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how to fetch all the row of the result in php mysql?

In my table I have 2 records with companyid = 1 , but when I run the php below for companyid = 1 it ... it returns all the rows .. 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++ - QTableView printing

I am new on QT an I try to print out from QTableView How can I do this? Thank a lot See Question&Answers more detail:os...

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Python: search longest palindromes within a word and palindromes within a word/string

So here is a code i have written to find palindromes within a word (To check if there are palindromes within ... which iterates many a times? See Question&Answers more detail:os...

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python - TypeError: only integer scalar arrays can be converted to a scalar index with 1D numpy indices array

I want to write a function that randomly picks elements from a training set, based on the bin probabilities ... astype(int). Same error. See Question&Answers more detail:os...

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collections - Java 8 stream map to list of keys sorted by values

I have map Map<Type, Long> countByType and I want to have a list which has sorted (min to max) keys by ... of types, without losing the order? See Question&Answers more detail:os...

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c# - Getting controller name from razor

I seem to be having a difficult getting something that should be easy. From within my view, using Razor, I'd like ... , don't attack me to bad. See Question&Answers more detail:os...

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Is python += string concatenation bad practice?

I am reading The Hitchhiker's Guide to Python and there is a short code snippet foo = 'foo' bar = 'bar' ... () should be your preferred method. See Question&Answers more detail:os...

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javascript - WARNING: Tried to load angular more than once. Angular JS

I am trying to view my app after running Grunt Build. I use grunt serve:dist to see all production ready build but in ... : '/' }); }]); See Question&Answers more detail:os...

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c# - MVC Attribute Routing Not Working

I'm relatively new to the MVC framework but I do have a functioning Web Project with an API controller that ... {controller}/{action}/{id} See Question&Answers more detail:os...

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c - *nix select and exceptfds/errorfds semantics

The select syscall takes 3 filedescriptor sets for watching fds for readable/writeable and "exceptions" on ... kinds of descriptors? See Question&Answers more detail:os...

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ms access - Is there an equivalent to Thread.Sleep() in VBA

Is there an equivalent to Thread.Sleep() in Access VBA? See Question&Answers more detail:os...

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Does the .Net Framework 4.0 Installer include the .Net Framework 3.5?

Do .Net components that were compiled against the .Net Framework 3.5 run on a system that has only .Net Framework ... the .Net Framework 3.5? See Question&Answers more detail:os...

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python - Numpy Vector (N,1) dimension -> (N,) dimension conversion

I have a question regarding the conversion between (N,) dimension arrays and (N,1) dimension arrays. For ... without copying? Thanks, Tom See Question&Answers more detail:os...

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python - How do I print a datetime in the local timezone?

Let's say I have a variable t that's set to this: datetime.datetime(2009, 7, 10, 18, 44, 59, 193982, ... in the local timezone rather than UTC? See Question&Answers more detail:os...

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syntax - How do you print a dollar sign $ in Dart

I need to actually print a Dollar sign in Dart, ahead of a variable. For example: void main() { int dollars=42; ... . How can I do this? Thanks. See Question&Answers more detail:os...

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naming conventions - How to name C# source files for generic classes

I am trying to stick to general naming conventions such as those described in Design Guidelines for Developing Class ... What are your habits? See Question&Answers more detail:os...

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visual studio 2010 - Is it possible to change CSS Validation scheme in VS2010

I'm editing a simple CSS file in VS2010 and the editor seems to have a rather limited understanding of CSS, for ... the life of me find it. See Question&Answers more detail:os...

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Creating Directories in a ZipArchive C# .Net 4.5

A ZipArchive is a collection of ZipArchiveEntries, and adding/removing "Entries" works nicely. But it appears ... .CreateEntry("entryname"); See Question&Answers more detail:os...

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java - How to write JUnit test with Spring Autowire?

Here are the files that I use: component.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http:// ... ~[spring-beans.jar:3.1.2.RELEASE] 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 - CSS box shadow around a custom shape?

Hy there, I need to create a div which looks like this: What i've came up with so far is this: http:// ... .) everything is fine ;) Thanks, mik See Question&Answers more detail:os...

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

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android - Setting data source to an raw ID in MediaPlayer

In MediaPlayer.create method an id to a Raw file can be used but how to use that in setDataSource method? See Question&Answers more detail:os...

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

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