OStack Q&A-Knowledge Sharing Community

0 votes

503 views

1 answer

python - How do you create a custom activation function with Keras?

Sometimes the default standard activations like ReLU, tanh, softmax, ... and the advanced activations like ... do you create your own activation function? Question&Answers:os...

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

0 votes

74 views

1 answer

javascript - Access denied to jQuery script on IE

I have an iframe using the jQuery 1.4.2 script. The same iframe is injected into both http and https sites. The ... success: function(ret){ callback(ret) } }); Question&Answers:os...

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

0 votes

101 views

1 answer

c# - ASP.NET file download from server

After a user clicks a button, I want a file to be downloaded. I've tried the following which seems to work, but ... .csv")); response.Flush(); response.End(); Question&Answers:os...

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

0 votes

684 views

1 answer

php - imagecreatefrompng() Makes a black background instead of transparent?

I make thumbnails using PHP and GD library but my code turn png transparency into a solid black color, Is there a ... } imagejpeg($dimg,$dest,100); } Thank you Question&Answers:os...

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

0 votes

58 views

1 answer

Return value of printf() function in C

The printf() function will return the number of characters printed. But in the code below why is it printing 5. int a ... "1000 2". But its outputting "1000 5". Question&Answers:os...

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

0 votes

137 views

1 answer

html - Use css gradient over background image

I've been trying to use a linear gradient on top of my background image in order to get a fading effect on the bottom of my ... ), to(rgba(0, 0, 0, 1))); } Question&Answers:os...

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

0 votes

233 views

1 answer

php String Concatenation, Performance

In languages like Java and C#, strings are immutable and it can be computationally expensive to build a ... there similar solutions to the problem available? Question&Answers:os...

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

0 votes

141 views

1 answer

Is reading the `length` property of an array really that expensive an operation in JavaScript?

I always assumed caching the length of an array in JavaScript is a good idea (especially in the condition ... array and otherwise simply stored as an integer? Question&Answers:os...

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

0 votes

209 views

1 answer

python - How to find char in string and get all the indexes?

I got some simple code: def find(str, ch): for ltr in str: if ltr == ch: return str.index(ltr) find("ooottat", " ... is this and is there any way to get 0 1 2? Question&Answers:os...

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

0 votes

236 views

1 answer

Global Variable from a different file Python

So I have two different files somewhat like this: file1.py from file2 import * foo = "bar" test = ... extremely helpful if this is possible in some way. Question&Answers:os...

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

0 votes

1.2k views

1 answer

dynamic - Use of eval in Python?

There is an eval() function in Python I stumbled upon while playing around. I cannot think of a case when ... as syntactic sugar. Can anyone give an example? Question&Answers:os...

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

0 votes

240 views

1 answer

css - Find text string in jQuery and make it bold

What I want to do is use jQuery to find a piece of text within a paragraph and add some CSS to make it ... , hence me executing it after the window has loaded. Question&Answers:os...

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

0 votes

964 views

1 answer

scale - JavaFX correct scaling

I want to scale all nodes in a Pane on a scroll event. What I have tried so far: When I do scaleX or ... ()+scaleX) and for y and other nodes appropriately. Question&Answers:os...

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

0 votes

245 views

1 answer

sql server 2008 - varchar(max) everywhere?

Is there any problem with making all your Sql Server 2008 string columns varchar(max)? My allowable string sizes ... of the data that actually goes into them? Question&Answers:os...

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

0 votes

59 views

1 answer

How to copy a python class?

deepcopy from copy does not copy a class: >>> class A(object): >>> ARG = 1 >>> B = deepcopy(A) >>> A().ARG >>> 1 ... > B().ARG >>> 2 Is it only way? B(A): pass Question&Answers:os...

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

0 votes

252 views

1 answer

java - Deserializing polymorphic types with Jackson based on the presence of a unique property

If I have a class structure like so: public abstract class Parent { private Long id; ... } public class ... "stringB": ... deserialize it as SubClassB". Question&Answers:os...

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

0 votes

448 views

1 answer

r - Selecting multiple odd or even columns/rows for dataframe

Is there a way in R to select many non-consecutive i.e. odd or even rows/columns? I'm plotting the loadings for ... ]) Surely there's an easier way to do this? Question&Answers:os...

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

0 votes

493 views

1 answer

amazon web services - API Gateway - POST multipart/form-data

It seems my question maybe a little similar to this one. I have an API within my API Gateway and am doing ... POST Error is still 400 - no file found Question&Answers:os...

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

0 votes

321 views

1 answer

javascript - MediaStream Capture Canvas and Audio Simultaneously

I'm working on a project in which I'd like to: Load a video js and display it on the canvas. Use filters ... can be recorded or rendered in a media element." Question&Answers:os...

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

0 votes

73 views

1 answer

java - Static vs Instance Variables: Difference?

What is the difference between a static and instance variable. The following sentence is what I cant get: In ... only had scope within their own methods? Question&Answers:os...

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

0 votes

286 views

1 answer

security - Is it possible to put binary image data into html markup and then get the image displayed as usual in any browser?

It's an important security issue and I'm sure this should be possible. A simple example: You run a community ... app runs as. Is there already a possibility? Question&Answers:os...

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

0 votes

172 views

1 answer

c# - Do static members ever get garbage collected?

Do static member variables ever get garbage collected? For example, let's use the following class. public class ... e possibly get a new instance of shared? Question&Answers:os...

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

0 votes

134 views

1 answer

javascript - Dynamically loading a typescript class (reflection for typescript)

I would like to be able to instantiate a typescript class where I get the class and constructor details at runtime. The ... BIT I DON'T KNOW HOW TO DO) } Question&Answers:os...

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

0 votes

178 views

1 answer

python - How to load a module from code in a string?

I have some code in the form of a string and would like to make a module out of it without writing to disk. When I ... to do this, I believe it's the best way. Question&Answers:os...

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

0 votes

247 views

1 answer

Android - how to set the wallpaper image

Is it possible to set the android wallpaper image programatically? I'd like to create a service that ... and updates the home screen wallpaper periodically. Question&Answers:os...

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

0 votes

269 views

1 answer

python - How to print one character at a time on one line?

How would one print the string "hello world" onto one line, but one character at a time so that there is a ... for char in string: print char time.sleep(.25) Question&Answers:os...

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

0 votes

1.2k views

1 answer

batch file - How to set a variable inside a loop for /F

I made this code dir /B /S %RepToRead% > %FileName% for /F "tokens=*" %%a in ('type %FileName%') do ( set ... want to split the variable like %z:~7% Any ideas? Question&Answers:os...

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

0 votes

241 views

1 answer

c# - Checking if a bit is set or not

How to check if a certain bit in a byte is set? bool IsBitSet(Byte b,byte nPos) { return .....; } Question&Answers:os...

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

Categories

Recent questions

Just Browsing Browsing

Most popular tags