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css - Font scaling based on width of container

I'm having a hard time getting my head around font scaling. I currently have a website with a body font- ... 100pixels decrease in width to control the text. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - ORA-00979 not a group by expression

I am getting ORA-00979 with the following query: SELECT cr.review_sk, cr.cs_sk, cr.full_name, tolist(to_char(cf. ... time, but am still getting the same error. Question&Answers:os...

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performance - StringBuilder vs String concatenation in toString() in Java

Given the 2 toString() implementations below, which one is preferred: public String toString(){ return "{a: ... would you switch from + concat to StringBuilder? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to prevent buttons from submitting forms

In the following page, with Firefox the remove button submits the form, but the add button does not. How do I prevent the ... ="Submit"> </form> </body> </html> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - HTML-encoding lost when attribute read from input field

I'm using JavaScript to pull a value out from a hidden field and display it in a textbox. The value in the ... a jQuery method that will HTML-encode a string? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to detect collisions between two rectangular objects or images in pygame

I am making a game in which the player has to use a bowl to catch falling items. I have some images of ... clock.tick(60) pygame.display.update() game_loop() Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How can I force division to be floating point? Division keeps rounding down to 0?

I have two integer values a and b, but I need their ratio in floating point. I know that a < b and I want to ... number in Python in the following? c = a / b Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can I add a blank directory to a Git repository?

How can I add a blank directory (that contains no files) to a Git repository? Question&Answers:os...

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pointers - How come an array's address is equal to its value in C?

In the following bit of code, pointer values and pointer addresses differ as expected. But array values and addresses don't! ... ... "); getchar(); return 0; } Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I clone a subdirectory only of a Git repository?

I have my Git repository which, at the root, has two sub directories: /finisht /static When this was in SVN, / ... static Is there a way to do this with Git? Question&Answers:os...

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c++ - Why do I have to access template base class members through the this pointer?

If the classes below were not templates I could simply have x in the derived class. However, with the code below, I have ... derived<int> d; d.f(); return 0; } Question&Answers:os...

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html - How to style a checkbox using CSS

I am trying to style a checkbox using the following: <input type="checkbox" style="border:2px dotted #00f;display:block;background:#ff0000;" /> Question&Answers:os...

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java - Reading a resource file from within jar

I would like to read a resource from within my jar like so: File file; file = new File(getClass().getResource(" ... folder with my file is in a class folder. Question&Answers:os...

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html - Which "href" value should I use for JavaScript links, "#" or "javascript:void(0)"?

The following are two methods of building a link that has the sole purpose of running JavaScript code. Which is ... ="myJsFunc();">Run JavaScript Code</a> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Accessing the index in 'for' loops?

How do I access the index in a for loop like the following? ints = [8, 23, 45, 12, 78] for i in ints: ... access the loop index, from 1 to 5 in this case? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to detect Safari, Chrome, IE, Firefox and Opera browser?

I have 5 addons/extensions for FF, Chrome, IE, Opera, and Safari. How can I recognize the user ... has been clicked) to download the corresponding addon? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - How do I style a <select> dropdown with only CSS?

Is there a CSS-only way to style a <select> dropdown? I need to style a <select> form as much as humanly ... on Stack Overflow. And this one on Doctype.com. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to execute a JavaScript function when I have its name as a string

I have the name of a function in JavaScript as a string. How do I convert that into a function pointer so ... form of namespace.namespace.function(args[...]). Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - T-SQL split string

I have a SQL Server 2008 R2 column containing a string which I need to split by a comma. I have ... any split function examples. Any help greatly appreciated. Question&Answers:os...

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if statement - Why non-equality check of one variable against many values always returns true?

I have a variable v in my program, and it may take any value from the set of values "a", "b", " ... if condition always get executed. Am I doing anything wrong? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is a serialVersionUID and why should I use it?

Eclipse issues warnings when a serialVersionUID is missing. The serializable class Foo does not declare a ... missing serialVersionUID will cause a problem. Question&Answers:os...

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How do I perform the SQL Join equivalent in MongoDB?

How do I perform the SQL Join equivalent in MongoDB? For example say you have two collections (users and comments) ... results. Seems like I am doing it wrong. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I UPDATE from a SELECT in SQL Server?

In SQL Server, it is possible to insert rows into a table with an INSERT.. SELECT statement: INSERT INTO Table ( ... = 'cool' WHERE Table.id = other_table.id Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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HTTP GET request in JavaScript?

I need to do an HTTP GET request in JavaScript. What's the best way to do that? I need to do this in a Mac OS X dashcode widget. Question&Answers:os...

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javascript - Can I use multiple versions of jQuery on the same page?

A project I'm working on requires the use of jQuery on customers' Web pages. Customers will insert a chunk of ... and complexity penalties of extra <iframe>s). Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Is it possible to simulate key press events programmatically?

Is it possible to simulate key press events programmatically in JavaScript? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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oop - Interface vs Abstract Class (general OO)

I have had recently two telephone interviews where I've been asked about the differences between an Interface ... between an interface and abstract class? Question&Answers:os...

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Why doesn't calling a Python string method do anything unless you assign its output?

I try to do a simple string replacement, but I don't know why it doesn't seem to work: X = "hello world" ... remains "hello world". Why is my code not working? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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