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batch file - At which point does `for` or `for /R` enumerate the directory (tree)?

The command for can be used to enumerate a directory and apply (a) certain command(s) on each item. ... also my similar question about the forfiles command. Question&Answers:os...

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

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merge - How to replace master branch in Git, entirely, from another branch?

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

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c# - Replacing .NET WebBrowser control with a better browser, like Chrome?

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

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

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c# - When to use .First and when to use .FirstOrDefault with LINQ?

I've searched around and haven't really found a clear answer as to when you'd want to use .First and when you'd want to ... .Where(x => x == "foo").Take(1); Question&Answers:os...

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

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What is the difference between ApplicationContext and WebApplicationContext in Spring MVC?

What is the difference between Application Context and Web Application Context? I am aware that ... of beans are defined in ApplicationContext? Question&Answers:os...

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

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Differences between strong and weak in Objective-C

I'm new to Obj-C, so my first question is: What are the differences between strong and weak in @property ... to objects? Also, what does nonatomic mean? Question&Answers:os...

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

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swift - iOS app with framework crashed on device, dyld: Library not loaded, Xcode 6 Beta

This crash has been a blocking issue I used the following steps to reproduce the issue: Create a Cocoa Touch ... of Xcode. Can anyone shed light on this? Question&Answers:os...

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

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How to make a timezone aware datetime object in Python?

What I need to do I have a timezone-unaware datetime object, to which I need to add a time zone in order ... the risk of defaulting to that in this case. Question&Answers:os...

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

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r - Emulate ggplot2 default color palette

What function can I use to emulate ggplot2's default color palette for a desired number of colors. For ... character vector of HEX colors with these colors: Question&Answers:os...

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

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validation - Check if inputs are empty using jQuery

I have a form that I would like all fields to be filled in. If a field is clicked into and then not filled ... being filled in or not. 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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sql - How to generate a range of numbers between two numbers?

I have two numbers as input from the user, like for example 1000 and 1050. How do I generate the numbers between ... want this: 1000 1001 1002 1003 . . 1050 Question&Answers:os...

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

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How to parse XML using vba

I work in VBA, and want to parse a string eg <PointN xsi:type='typens:PointN' xmlns:xsi='http://www.w3.org/2001/ ... of the field I work in. How do I do this? Question&Answers:os...

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

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android - java.util.zip.ZipException: duplicate entry during packageAllDebugClassesForMultiDex

I am not sure what this error means. Execution failed for task ':excelSior:packageAllDebugClassesForMultiDex'. > ... the application What could be the problem? Question&Answers:os...

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

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shell - Bash command line and input limit

Is there some sort of character limit imposed in bash (or other shells) for how long an input can be? If ... not a required limit, is there a suggested limit? Question&Answers:os...

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

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reflection - How can I evaluate a C# expression dynamically?

I would like to do the equivalent of: object result = Eval("1 + 3"); string now = Eval("System.DateTime.Now().ToString ... s = mi.Invoke(o, null); return s; } Question&Answers:os...

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

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542 views

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floating point - How many significant digits do floats and doubles have in java?

Does a float have 32 binary digits and a double have 64 binary digits? The documentation was too hard to make ... the decimal point take up some of the bits? Question&Answers:os...

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

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c++ - initializer_list and move semantics

Am I allowed to move elements out of a std::initializer_list<T>? #include <initializer_list> #include <utility> ... d rather be safe than sorry and ask. Question&Answers:os...

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

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wpf - How to deal with cross-thread access exceptions?

A common exception one can get when working with multiple threads in WPF is: The calling thread cannot access ... are the options to deal with this properly? Question&Answers:os...

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

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version control - How do I discard unstaged changes in Git?

How do I discard changes in my working copy that are not in the index? Question&Answers:os...

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

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hibernate - Difference between FetchType LAZY and EAGER in Java Persistence API?

I am a newbie to Java Persistence API and Hibernate. What is the difference between FetchType.LAZY and FetchType.EAGER in Java Persistence API? Question&Answers:os...

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

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45 views

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How can I build XML in C#?

How can I generate valid XML in C#? Question&Answers:os...

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

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133 views

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python - What's the difference between globals(), locals(), and vars()?

What is the difference between globals(), locals(), and vars()? What do they return? Are updates to the results useful? Question&Answers:os...

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

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207 views

1 answer

A quick and easy way to join array elements with a separator (the opposite of split) in Java

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

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130 views

1 answer

android - How can you tell when a layout has been drawn?

I have a custom view that draws a scrollable bitmap to the screen. In order to initialize it, i need to pass ... gets drawn? Is there an event or callback? Question&Answers:os...

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

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235 views

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python - Pandas: filling missing values by mean in each group

This should be straightforward, but the closest thing I've found is this post: pandas: Filling missing values within ... groupby('name').mean() Thanks a bunch. Question&Answers:os...

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

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512 views

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xhtml - Can an HTML element have multiple ids?

I understand that an id must be unique within an HTML/XHTML page. For a given element, can I assign multiple ... m just curious about using ids in this manner. Question&Answers:os...

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

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146 views

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java - How do you write to a folder on an SD card in Android?

I am using the following code to download a file from my server then write it to the root directory of the ... file to? For example: /mnt/sdcard/myapp/downloads Question&Answers:os...

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

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119 views

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sql - MySQL Insert query doesn't work with WHERE clause

What's wrong with this query: INSERT INTO Users( weight, desiredWeight ) VALUES ( 160, 145 ) WHERE id = 1; It ... clause. I've seemed to have forgot my SQL. Question&Answers:os...

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

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