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language agnostic - Is it OK to use DYLD_LIBRARY_PATH on Mac OS X? And, what's the dynamic library search algorithm with it?

I read some articles discouraging of the use of DYLD_LIBRARY_PATH, as the the path of dynamic library ... directory -> DYLD_LIBRARY_PATH directories ... ? Question&Answers:os...

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

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c# - Why we have both jagged array and multidimensional array?

What is the difference between jagged array and Multidimensional array. Is there a benefit of one on another? And why ... ..}) MyClass[][,][,] itemscollection; Question&Answers:os...

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

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c++ - Using strtok with a std::string

I have a string that I would like to tokenize. But the C strtok() function requires my string to be a char*. How ... turns it into a const char*, not a char* Question&Answers:os...

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

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How do I get rid of the b-prefix in a string in python?

A bunch of the tweets I am importing are having this issue where they read b'I posted a new photo to ... in position 64-65: character maps to <undefined> Question&Answers:os...

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

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python - How to remove anaconda from windows completely?

I installed Anaconda a while ago but recently decided to uninstall it and just install basic python 2.7. I ... still installed? And how can I change this? 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 creating JSF pages with .jsp or .xhtml or .jsf extension

I saw some examples creating the JSF pages with .jsp extension, other examples creating them with .xhtml ... and how to choose the appropriate extension? Question&Answers:os...

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

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macos - How to build a dmg Mac OS X file (on a non-Mac platform)?

Is it possible to build a .dmg file (for distributing apps) from a non-Mac platform? And if yes, how? Question&Answers:os...

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

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python - Pandas create new column with count from groupby

I have a df that looks like the following: id item color 01 truck red 02 truck red 03 car black 04 ... what I am searching for. Any guidance is appreciated Question&Answers:os...

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

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asp.net mvc 3 - MVC, EF - DataContext singleton instance Per-Web-Request in Unity

I have a MVC 3 web application, where I am using the Entity Framework for the data access. Furthermore, I ... ://msdn.microsoft.com/en-us/library/bb738470.aspx Question&Answers:os...

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

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java - Can I use Class.newInstance() with constructor arguments?

I would like to use Class.newInstance() but the class I am instantiating does not have a nullary constructor. ... arguments. Is there a way to do this? Question&Answers:os...

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

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Sort divs in jQuery based on attribute 'data-sort'?

If I have several divs: <div data-sort='1'>div1</div> <div data-sort='4'>div4</div> <div data-sort='8'>div8</ ... in, but I am not sure if this is the best way. Question&Answers:os...

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

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c++ - How to get std::vector pointer to the raw data?

I'm trying to use std::vector as a char array. My function takes in a void pointer: void process_data( ... extension used : class rvalue used as lvalue. Question&Answers:os...

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

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sql - How can I introduce multiple conditions in LIKE operator?

I want to write an SQL statement like below: select * from tbl where col like ('ABC%','XYZ%','PQR%'); I ... But I want to know is there any better solution. Question&Answers:os...

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

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java - How do I schedule a task to run at periodic intervals?

I was trying some codes to implement a scheduled task and came up with these codes . import java.util.*; class Task ... one output...How do I solve this out? Question&Answers:os...

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

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objective c - Why use weak pointer for delegation?

I can't understand why it is correct to define a delegate with weak pointer : @property (nonatomic,weak) id ... can help me to fully understand this situation. Question&Answers:os...

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

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c# - How can I sign a file using RSA and SHA256 with .NET?

My application will take a set of files and sign them. (I'm not trying to sign an assembly.) There is a ... the PrivateKey from key store file. Is that Correct? Question&Answers:os...

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

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PHP Parallel curl requests

I am doing a simple app that reads json data from 15 different URLs. I have a special need that I need to do ... for the first request and then do the next one. Question&Answers:os...

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

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187 views

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c# - Insert entire DataTable into database at once instead of row by row?

I have a DataTable and need the entire thing pushed to a Database table. I can get it all in there with a ... table. the rest of them should be left NULL. Question&Answers:os...

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

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What does !! mean in ruby?

Just wondering what !! is in Ruby. Question&Answers:os...

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

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angular - Repeat HTML element multiple times using ngFor based on a number

How do I use *ngFor to repeat a HTML element multiple times? For eg: If I have a member variable assigned to ... *ngFor directive to make a div repeat 20 times? Question&Answers:os...

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

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nullreferenceexception - C# elegant way to check if a property's property is null

In C#, say that you want to pull a value off of PropertyC in this example and ObjectA, PropertyA and PropertyB can ... pointed out that it would not work in js. Question&Answers:os...

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

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javascript - Use anchors with react-router

How can I use react-router, and have a link navigate to a particular place on a particular page? (e.g. /home- ... e.g. using the "hash" prop in <Link>) Question&Answers:os...

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

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222 views

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performance - Java 8's streams: why parallel stream is slower?

I am playing with Java 8's streams and cannot understand the performance results I am getting. I have 2 core ... give me a hint why parallel version is slower? Question&Answers:os...

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

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321 views

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algorithm - Generate all unique substrings for given string

Given a string s, what is the fastest method to generate a set of all its unique substrings? Example: for ... homework, so pointers-only are welcome as well) Question&Answers:os...

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

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234 views

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c# - How can I insert 10 million records in the shortest time possible?

I have a file (which has 10 million records) like below: line1 line2 line3 line4 ....... ...... 10 million ... ( FIELDTERMINATOR = '', ROWTERMINATOR = ' ' ); Question&Answers:os...

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

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253 views

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How to change the color of progressbar in C# .NET 3.5?

I'd like to do two things on my progress bar. Change the green colour to red. Remove the blocks ... how to accomplish will be greatfuly appreaciated! Thanks. Question&Answers:os...

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

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352 views

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Java: Why is the Date constructor deprecated, and what do I use instead?

I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that Date was ... in cases like above) should be used instead? Question&Answers:os...

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

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303 views

1 answer

android - How to avoid soft keyboard pushing up my layout?

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

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

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