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c# - How would you count occurrences of a string (actually a char) within a string?

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php - Row count with PDO

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Illegal string offset Warning PHP

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LINQ equivalent of foreach for IEnumerable<T>

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node.js - What's the difference between tilde(~) and caret(^) in package.json?

After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in ... caret ^? What are the advantages over others? Question&Answers:os...

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c# - How do I remedy "The breakpoint will not currently be hit. No symbols have been loaded for this document." warning?

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r - Remove duplicated rows

I have read a CSV file into an R data.frame. Some of the rows have the same element in one of the columns ... the others have the same data in the first column. Question&Answers:os...

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Is JavaScript's "new" keyword considered harmful?

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javascript - Node.js - SyntaxError: Unexpected token import

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How to override toString() properly in Java?

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What is Java String interning?

What is String Interning in Java, when I should use it, and why? Question&Answers:os...

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pip - Installing python module within code

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java - What does "Incompatible types: void cannot be converted to ..." mean?

What does the Java compilation message: "Incompatible types: void cannot be converted to ..." mean, and how do ... " problems that one can encounter in Java.) Question&Answers:os...

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oop - When should you use a class vs a struct in C++?

In what scenarios is it better to use a struct vs a class in C++? Question&Answers:os...

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Solutions for INSERT OR UPDATE on SQL Server

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assembly - Boot loader doesn't jump to kernel code

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

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How to use SSH to run a local shell script on a remote machine?

I have to run a local shell script (windows/Linux) on a remote machine. I have SSH configured on both machine A ... there a way to run do this using plink/ssh? Question&Answers:os...

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python - Saving an Object (Data persistence)

I've created an object like this: company1.name = 'banana' company1.value = 40 I would like to save this object. How can I do that? Question&Answers:os...

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JavaScript: Object Rename Key

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android - SHA-1 fingerprint of keystore certificate

Is the method for getting an SHA-1 fingerprint the same as the method of getting the fingerprint? Previously, ... SHA-1 fingerprint. Can somebody clarify this? Question&Answers:os...

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How do I read and parse an XML file in C#?

How do I read and parse an XML file in C#? Question&Answers:os...

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

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python - Remove all occurrences of a value from a list?

In Python remove() will remove the first occurrence of value in a list. How to remove all occurrences of a value from a list? This ... 2, 3], 2) [1, 3, 4, 3] Question&Answers:os...

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How to use JavaScript variables in jQuery selectors?

How do I use JavaScript variables as a parameter in a jQuery selector? <script type="text/javascript"> $( ... name of the element that is being clicked. Question&Answers:os...

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html - How to send HTTP request in java?

This question already has answers here: Question&Answers:os...

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

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python - Decorators with parameters?

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Why don't the AngularJS docs use a dot in the model directive?

In the video AngularJS MTV Meetup: Best Practices (2012/12/11), Mi?ko explains "..if you use ng-model there ... that it's now more forgiving with ng-model? Question&Answers:os...

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java - Make copy of an array

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groovy - How to access java-classes in the default-package?

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

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