OStack Q&A-Knowledge Sharing Community

0 votes

1.4k views

1 answer

loops - How to make a jquery infinite animation?

I'm trying to implement a jQuery function with an infinite loop to animate the body background with 3 colours. I cannot think of ... 500); }); }); }); Any idea? Question&Answers:os...

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

0 votes

468 views

1 answer

relative path to CSS file

Closed. This question needs details or clarity. It is not currently accepting answers. Question&Answers:os...

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

0 votes

315 views

1 answer

sql - Using ISNULL vs using COALESCE for checking a specific condition?

I know that multiple parameters can be passed to COALESCE, but when you want to to check just one expression ... Is there any performance gain between the two? Question&Answers:os...

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

0 votes

623 views

1 answer

callback - Python, how to pass an argument to a function pointer parameter?

I only just started learning Python and found out that I can pass a function as the parameter of another function. ... to pass "test" to repeat instead of foo? Question&Answers:os...

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

0 votes

213 views

1 answer

c# - Main method code entirely inside try/catch: Is it bad practice?

Usually I put all of my Main method code inside of a try/catch block like so: public static void Main(string[ ... bad practice. Do you think it is bad practice? Question&Answers:os...

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

0 votes

1.0k views

1 answer

reading a specific file from sdcard in android

how to read a specific file from sdcard. i have pushed the file in sdcard through DDMS and i am ... (); FileInputStream iStream = new FileInputStream(path); Question&Answers:os...

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

0 votes

371 views

1 answer

casperjs - downloading a file that comes as an attachment in a POST request response in PhantomJs

I want to download a CSV file, it is generated on a button click through a POST request. I researched to my ... Apr 2013 23:26:40 GMT Content-Length: 65183 Question&Answers:os...

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

0 votes

233 views

1 answer

Append data to a .JSON file with PHP

I have this .json file: [ { "id": 1, "title": "Ben\'s First Blog Post", "content": "This is the ... the valid JSON structure with [ and {, is this possible? Question&Answers:os...

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

0 votes

287 views

1 answer

vba - Run same excel macro on multiple excel files

I have a folder where I receive 1000+ excel files on daily bases they all are same format and structure. What ... running that same macro on 1000+ files daily. Question&Answers:os...

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

0 votes

313 views

1 answer

r - Sample random rows within each group in a data.table

How would you use data.table to efficiently take a sample of rows within each group in a data frame? DT = data.table(a = ... 799 4: 1 69 5: 1 347 6: 1 732 Question&Answers:os...

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

0 votes

1.1k views

1 answer

installation - Programmatically extract contents of InstallShield setup.exe

I am trying to extract the file-contents of an InstallShield setup.exe-file. (My plan is to use it in a ... looking for a more stable way. Ideas welcome. Question&Answers:os...

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

0 votes

269 views

1 answer

r - Finding All Positions for Multiple Elements in a Vector

Suppose I have the following vector: x <- c(8, 6, 9, 9, 7, 3, 2, 5, 5, 1, 6, 8, 5, 2, 9, 3, 5, 10, 8, 2) How can I find which elements are either 8 or 9? Question&Answers:os...

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

0 votes

121 views

1 answer

iphone - GCD, Threads, Program Flow and UI Updating

I'm having a hard time figuring out how to put this all together. I have a puzzle solving app on the mac. ... [NSString stringWithFormat:@"%d",maxMoves]; }); } Question&Answers:os...

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

0 votes

159 views

1 answer

html - problem with <select> and :after with CSS in WebKit

I would like to add some style on a select box with the pseudo :after (to style my select box with 2 parts and ... } So is it normal or is there a trick? Question&Answers:os...

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

0 votes

146 views

1 answer

java - Compare one String with multiple values in one expression

I have one String variable, str with possible values, val1, val2 and val3. I want to compare (with equal case ... .equalsIgnoreCase(str) //this is only an idea. Question&Answers:os...

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

0 votes

198 views

1 answer

python - Difference between type(obj) and obj.__class__

What is the difference between type(obj) and obj.__class__? Is there ever a possibility of type(obj) is not obj.__class__? I ... 1) # #1 b = a.__class__(1) # #2 Question&Answers:os...

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

0 votes

238 views

1 answer

python - Running get_dummies on several DataFrame columns?

How can one idiomatically run a function like get_dummies, which expects a single column and returns several, on multiple DataFrame columns? Question&Answers:os...

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

0 votes

199 views

1 answer

shell - Unix time and leap seconds

Regarding Unix (POSIX) time, Wikipedia says: Due to its handling of leap seconds, it is neither a linear ... while the concept of Unix time doesn't? Question&Answers:os...

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

0 votes

692 views

1 answer

javascript - Limit number of lines in textarea and Display line count using jQuery

Using jQuery I would like to: Limit the number of lines a user can enter in a textarea to a set number Have ... say limit the number of lines allowed to 10. Question&Answers:os...

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

0 votes

383 views

1 answer

Algorithm to convert an IEEE 754 double to a string?

Many programming languages that use IEEE 754 doubles provide a library function to convert those doubles ... programmer-chosen precision limitations? Thanks! Question&Answers:os...

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

0 votes

177 views

1 answer

java - How to find the currently running applications programmatically in Android?

I am very new to Android. I am working on application that must get the information about the applications currently ... information on log. How can I do this? Question&Answers:os...

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

0 votes

328 views

1 answer

python - Types that define `__eq__` are unhashable?

I had a strange bug when porting a feature to the Python 3.1 fork of my program. I narrowed it down to the ... a __eq__ method.) How can I work around this? Question&Answers:os...

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

0 votes

234 views

1 answer

Image.open() cannot identify image file - Python?

I am running Python 2.7 in Visual Studio 2013. The code previously worked ok when in Spyder, but when I ... module> ImportError: No module named PIL All fail! Question&Answers:os...

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

0 votes

416 views

1 answer

Replace all occurrences of a string in a pandas dataframe (Python)

I have a pandas dataframe with about 20 columns. It is possible to replace all occurrences of a string (here a ... ") Is there any other, more elegant solution? Question&Answers:os...

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

0 votes

82 views

1 answer

How to convert List to Json in Java

How to convert generic list to json in Java.I have class like this.. public class Output { public int Keyname ... .After converting i will send it to client. Question&Answers:os...

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

0 votes

908 views

1 answer

encoding - Decode gzipped web page retrieved via cURL in PHP

I'm retrieving a gzipped web page via curl, but when I output the retrieved content to the browser I just get ... a gzipped html page returned by a web server. Question&Answers:os...

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

0 votes

410 views

1 answer

Ampersand vs plus for concatenating strings in VB.NET

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

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

0 votes

280 views

1 answer

c# - WPF: How to dynamically Add Controls in dynamically created WPF Window

I want to add a WPF Input Box in my Project in C#. I got a WinForm one from InputBox in C# ... The Window is showing through ShowDialog but without controls. 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