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Using both front and back cameras simultaneously android

I know this question has been asked many times before. I had looked for it over a year ago but didn't find ... one of the video recordings (front or back). Question&Answers:os...

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

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194 views

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php - "Invalid parameter number: parameter was not defined" Inserting data

I've been using Yii's active record pattern for a while. Now, my project needs to access a different database for one ... (just a silly thing I have to do). Question&Answers:os...

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

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436 views

1 answer

date - getMonth in javascript gives previous month

I am using a datepicker which gives a date in the format Sun Jul 7 00:00:00 EDT 2013. Even though the month ... /gives 6 instead of 7 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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How to set mobile system time and date in android?

When you want to change the mobile system date or time in your application, how do you go about doing it? Question&Answers:os...

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

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python - using pip3: module "importlib._bootstrap" has no attribute "SourceFileLoader"

I have installed pip for python 3.6 on Ubuntu 14. After I run sudo apt-get install python3-pip to install ... wrong, and I really cannot figure out the reason. Question&Answers:os...

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

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205 views

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python - Convert the string 2.90K to 2900 or 5.2M to 5200000 in pandas dataframe

Need some help on processing data inside a pandas dataframe. Any help is most welcome. I have OHCLV data in CSV format. ... 2016-09-14 10.00K 2016-09-13 3.20K Question&Answers:os...

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

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ads - Creating and managing a Facebook app from a Business Account

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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241 views

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c# - Run single instance of an application using Mutex

In order to allow only a single instance of an application running I'm using mutex. The code is given below ... MessageBox.Show("Instance already running"); } } Question&Answers:os...

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

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windows - Command to run a .bat file

I'm trying to make my Visual Studio build script execute a .bat file that does something important. Here is what I'm ... . How can I do this in one single line? Question&Answers:os...

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

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How do I copy a 2 Dimensional array in Java?

I need to make a copy of a fairly large 2 dimensional array for a project I am working on. I have two 2D ... what it was originally. Why would this be? Thanks Question&Answers:os...

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

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331 views

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c# - Select Right Generic Method with Reflection

I want to select the right generic method via reflection and then call it. Usually this is quite easy. For ... the 'Where'-method on the Queryable-class? Question&Answers:os...

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

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183 views

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C++ cast syntax styles

A question related to Regular cast vs. static_cast vs. dynamic_cast: What cast syntax style do you prefer in C ... using constructor syntax. What do you think? Question&Answers:os...

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

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327 views

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asp.net - What causes an application pool in IIS to recycle?

I have been searching for info on this to no avail. The context of why i need this is another question ... recycling the AppDomain only and not the whole pool. Question&Answers:os...

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

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java - Lambdas: local variables need final, instance variables don't

In a lambda, local variables need to be final, but instance variables don't. Why so? Question&Answers:os...

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

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1 answer

Are delphi variables initialized with a value by default?

I'm new to Delphi, and I've been running some tests to see what object variables and stack ... always set procedure-level variables before accessing them? Question&Answers:os...

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

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79 views

1 answer

python - Sleeping in a batch file

When writing a batch file to automate something on a Windows box, I've needed to pause its execution for several seconds ( ... ) if len(sys.argv) > 1 else 1) Question&Answers:os...

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

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103 views

1 answer

How to get the Android Emulator's IP address?

I want to get the currently running Android Emulator's IP address through code. How can it be achieved? Question&Answers:os...

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

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108 views

1 answer

java - How to Re-run failed JUnit tests immediately?

Is there a way to have an JUnit Rule or something similar that gives every failing test a second chance, just ... ), but this would be a future improvement. Question&Answers:os...

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

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268 views

1 answer

r - Plotting contours on an irregular grid

I have gone through pages and pages of contour plots in R (including many hints on stackoverflow) without ... The interpolation fails.help will be appreciated. Question&Answers:os...

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

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725 views

1 answer

flash - differences between using wmode="transparent", "opaque", or "window" for an embedded object on a webpage

when embedding a Flash object with the <object> and <embed> tag, there is an attribute called wmode. It ... it but not the formal documentation. thanks. Question&Answers:os...

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

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418 views

1 answer

function - What is the difference between PHP echo and PHP return in plain English?

Yes, I have googled this question and even referred to my textbook (PHP by Don Gosselin) but I seriously ... display the result! What am I not understanding? Question&Answers:os...

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

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283 views

1 answer

MongoDB: upsert sub-document

I have documents that looks something like that, with a unique index on bars.name: { name: 'foo', bars: [ ... I'm wondering if there are better solutions now.) Question&Answers:os...

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

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188 views

1 answer

python - range() for floats

Is there a range() equivalent for floats in Python? >>> range(0.5,5,1.5) [0, 1, 2, 3, 4] >>> range ... 5,0.5) ValueError: range() step argument must not be zero Question&Answers:os...

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

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491 views

1 answer

vba - Run Excel Macro from Outside Excel Using VBScript From Command Line

I'm trying to run an Excel macro from outside of the Excel file. I'm currently using a ".vbs" file run ... 'Macro.TestMacro' cannot be found. EDIT: Excel 2003. Question&Answers:os...

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

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221 views

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sql - How do you create a temporary table in an Oracle database?

I would like to create a temporary table in a Oracle database something like Declare table @table (int id) In ... with a select statement Is it possible? Thanks Question&Answers:os...

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

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294 views

1 answer

iphone - Retrieving a pixel alpha value for a UIImage

I am currently trying to obtain the alpha value of a pixel in a UIImageView. I have obtained ... I expected: CGContextSetBlendMode(context, kCGBlendModeCopy); Question&Answers:os...

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

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80 views

1 answer

python - How to read keyboard-input?

I would like to read data from the keyboard in python I try this: nb = input('Choose a number') print (' ... number but after nothing happen. Do you know why? Question&Answers:os...

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

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153 views

1 answer

c++ - How does std::flush work?

Can someone please explain (preferably using plain english) how std::flush works? What is it? When would you flush a stream? Why is it important? Thank you. Question&Answers:os...

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

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