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reflection - How do I intercept a method call in C#?

For a given class I would like to have tracing functionality i.e. I would like to log every method call ( ... I'm allowed to slightly change the Call method? Question&Answers:os...

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sql - Foreign Key to non-primary key

I have a table which holds data, and one of those rows needs to exist in another table. So, I ... maybe a better way to maintain this referential integrity? Question&Answers:os...

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Return empty cell from formula in Excel

I need to return an empty cell from an Excel formula, but it appears that Excel treats an empty string or a ... if the value is "" instead of actually empty. Question&Answers:os...

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algorithm - The Most Efficient Way To Find Top K Frequent Words In A Big Word Sequence

Input: A positive integer K and a big text. The text can actually be viewed as word sequence. So we ... Retrieval experts can shed more light on this question. Question&Answers:os...

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java - How to get parameters from the URL with JSP

In JSP how do I get parameters from the URL? For example I have a URL www.somesite.com/Transaction_List. ... like there is for sessions or something similar? Question&Answers:os...

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cors - How to add an Access-Control-Allow-Origin header

I am designing a website (e.g. mywebsite.com) and this site loads font-face fonts from another site (say ... the Access-Control-Allow-Origin header to the font? Question&Answers:os...

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winforms - How to properly exit a C# application?

I have a published application in C#. The problem here is whenever I close the main form by clicking on the ... that affect how my application is behaving now? Question&Answers:os...

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c# - Design - Where should objects be registered when using Windsor

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java - How to Parse JSON Array with Gson

I want to parse JSON arrays and using gson. Firstly, I can log JSON output, server is responsing to client clearly. Here ... ()); What's wrong, how can I solve? Question&Answers:os...

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date - What is the best way to determine the number of days in a month with JavaScript?

I've been using this function but I'd like to know what's the most efficient and accurate way to get it. function ... new Date(iYear, iMonth, 32).getDate(); } Question&Answers:os...

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c# - The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required?

I want to send an email from my application and i have written following code for sending mail MailMessage msg = new ... do to solve this error and send mail?? Question&Answers:os...

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Convert int to char in java

Below is a code snippet, int a = 1; char b = (char) a; System.out.println(b); But what I get is empty ... a char as in the first snippet, what should I do? Question&Answers:os...

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python - How to write to a CSV line by line?

I have data which is being accessed via http request and is sent back by the server in a comma separated format, I have ... as f: for line in s: f.write(line) Question&Answers:os...

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java - Returning null as an int permitted with ternary operator but not if statement

Let's look at the simple Java code in the following snippet: public class Main { private int temp() { return ... , which does issue a compile-time error! Why? Question&Answers:os...

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internet explorer - Getting jQuery to recognise .change() in IE

I'm using jQuery to hide and show elements when a radio button group is altered/clicked. It works fine in ... fix it, they would be very much appreciated! Question&Answers:os...

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javascript - Get current clipboard content?

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c++ - Determine the line of code that causes a segmentation fault?

How does one determine where the mistake is in the code that causes a segmentation fault? Can my compiler (gcc) show the location of the fault in the program? Question&Answers:os...

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What exactly is the parameter e (event) and why pass it to JavaScript functions?

Well, when I learned JavaScript, all the books and Internet articles I read showed code passing a parameter e to ... { element.keyCode = e.charCode; } }; Question&Answers:os...

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Python append() vs. + operator on lists, why do these give different results?

Why do these two operations (append() resp. +) give different results? >>> c = [1, 2, 3] >>> c [1, ... are the same. Why is it different with the + operation? Question&Answers:os...

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Multiple Python versions on the same machine?

Is there official documentation on the Python website somewhere, on how to install and run multiple versions of Python on ... ? Or is this all dependent on OS? Question&Answers:os...

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css - Margin-Top not working for span element?

Can someone tell me what I coded wrong? Everything is working, the only thing is that there is no margin at the ... bold; font-size: 24px; color: #b8b2d4; } Question&Answers:os...

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Text size and different android screen sizes

I know, it was discussed already 1000 times, but I can't adjust the text size for different ... layout_marginTop="3dp" android:layout_marginBottom="3dp"/> Question&Answers:os...

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Memory address of variables in Java

Please take a look at the picture below. When we create an object in java with the new keyword, we are ... ) How can I get one integer variables address? Question&Answers:os...

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android - How to create a closed (circular) ListView?

I want to create a customized ListView (or similar) which will behave like a closed (circular) one: scrolling down - after ... or so, this is hard to do :-) Question&Answers:os...

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javascript - Blob from DataURL?

Using FileReader's readAsDataURL() I can transform arbitrary data into a Data URL. Is there way to convert ... into a Blob instance using builtin browser apis? Question&Answers:os...

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c# - How to check if an object is nullable?

How do I check if a given object is nullable in other words how to implement the following method... ... nullable and create a nullable wrapper around obj. Question&Answers:os...

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javascript - Detecting when a div's height changes using jQuery

I've got a div that contains some content that's being added and removed dynamically, so its height is changing often. ... I'm not sure which one to hook into. Question&Answers:os...

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php - Laravel : Syntax error or access violation: 1055 Error

I want to use WhereIn and Groupby in the same query to fetch Result. I've tried this: $loadids=explode("#@*", ... id in (14, 15, 16) group by vehicle_no) Question&Answers:os...

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

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