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How do I print the type or class of a variable in Swift?

Is there a way to print the runtime type of a variable in swift? For example: var now = NSDate ... ImplicitlyUnwrappedOptional<NSDate>, or at least NSDate!. Question&Answers:os...

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

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Android Crop Center of Bitmap

I have bitmaps which are squares or rectangles. I take the shortest side and do something like this: int value = ... the code to crop the center of the bitmap? Question&Answers:os...

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

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objective c - Save An Image To Application Documents Folder From UIView On IOS

I have a UIImageView that allows a user to place and hold an image until it can be saved. The problem is, ... onto the stack. Any help is greatly 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 - MVC4 DataType.Date EditorFor won't display date value in Chrome, fine in Internet Explorer

I'm using the DataType.Date attribute on my model and an EditorFor in my view. This is working fine in ... field">@Html.EditorFor(m=>m.EstPurchaseDate)</td> Question&Answers:os...

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

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unicode - Python UnicodeDecodeError - Am I misunderstanding encode?

Any thoughts on why this isn't working? I really thought 'ignore' would do the right thing. >>> 'add ... 0x93 in position 4: ordinal not in range(128) Question&Answers:os...

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

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How to change the text of a button in jQuery?

How do you change the text value of a button in jQuery? Currently, my button has 'Add' as its text value, and ... : $("#btnAddProfile").attr('value', 'Save'); Question&Answers:os...

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

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sql - Grouped LIMIT in PostgreSQL: show the first N rows for each group?

I need to take the first N rows for each group, ordered by custom column. Given the following table: db=# SELECT * ... (5 rows) I am using PostgreSQL 8.3.5. Question&Answers:os...

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

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In Android, how do I set margins in dp programmatically?

In this, this and this thread I tried to find an answer on how to set the margins on a single view. However, I ... and the original margins (ml, mr, mt, mb). Question&Answers:os...

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

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javascript - How do I correctly detect orientation change using Phonegap on iOS?

I found this orientation test code below looking for JQTouch reference material. This works correctly in the iOS simulator on ... to the left)."; break; } } Question&Answers:os...

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

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javascript - Should I be using object literals or constructor functions?

I am getting confused over which way I should be creating an object in javascript. It seems there are at least ... Is there an advantage of one over the other? Question&Answers:os...

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

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c++ - How do I sort a vector of pairs based on the second element of the pair?

If I have a vector of pairs: std::vector<std::pair<int, int> > vec; Is there and easy way to sort the list ... ), std::something_magic<int, int, std::less>()); Question&Answers:os...

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

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linux - Running Selenium WebDriver python bindings in chrome

I ran into a problem while working with Selenium. For my project, I have to use Chrome. However, I can't connect ... OS: GNU/Linux Gentoo Kernel 3.1.0-gentoo-r1 Question&Answers:os...

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

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ios - Find out if Character in String is emoji?

I need to find out whether a character in a string is an emoji. For example, I have this character: let string ... to find out if that character is an emoji. Question&Answers:os...

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

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node.js - NPM global install "cannot find module"

I wrote a module which I published to npm a moment ago (https://npmjs.org/package/wisp) So it installs fine ... being empty. No idea how to resolve this. Question&Answers:os...

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

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html - How do I get a div to float to the bottom of its container?

I have floated images and inset boxes at the top of a container using float:right (or left) many times. ... in the linked question may work for specific cases. Question&Answers:os...

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

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90 views

1 answer

c# - What difference does .AsNoTracking() make?

I have a question regarding the .AsNoTracking() extension, as this is all quite new and quite confusing. I'm ... . Can anyone tell me what the difference is? Question&Answers:os...

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

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168 views

1 answer

.net - How to Consume WCF Service with Android

I am creating a server in .NET and a client application for Android. I would like to implement an ... client and reply with session string. Thanks! Question&Answers:os...

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

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747 views

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swift2 - Swift: guard let vs if let

I have been reading about Optionals in Swift, and I have seen examples where if let is used to check if an ... my programs that contain if let to guard let? Question&Answers:os...

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

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105 views

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c# - How do I create a custom membership provider for ASP.NET MVC 2?

How do I create a custom membership for ASP.NET MVC 2 based on the ASP.NET membership provider? Question&Answers:os...

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

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maven 2 - Exclude all transitive dependencies of a single dependency

In Maven2, to exclude a single transitive dependency, I have to do something like this: <dependency> <groupId> ... dependencies at once instead of one-by-one? Question&Answers:os...

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

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332 views

1 answer

wpf - What is so special about Generic.xaml?

I've been trying to figure out how to organize my ResourceDictionary files for reuse and sharing with other members of my ... .e., if I have only one theme)? Question&Answers:os...

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

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123 views

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c++ - Unresolved external symbol in object files

During coding in Visual Studio I got an unresolved external symbol error and I've got no idea what to do. ... .exe : fatal error LNK1120: 6 unresolved externals Question&Answers:os...

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

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1.0k views

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cross browser - Failed to load resource under Chrome

There is a bunch of images in a web page. Other browsers do download them correctly, but Chrome doesn't. In ... , problem appears only in Chrome. What is it? Question&Answers:os...

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

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811 views

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python - Speeding up pandas.DataFrame.to_sql with fast_executemany of pyODBC

I would like to send a large pandas.DataFrame to a remote server running MS SQL. The way I do it now is by ... 3, pyODBC-4.0.21 and sqlalchemy-1.1.13. Question&Answers:os...

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

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389 views

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Html.fromHtml deprecated in Android N

I am using Html.fromHtml to view html in a TextView. Spanned result = Html.fromHtml(mNews.getTitle()); ... ... ... /How do I find the new way of doing this? Question&Answers:os...

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

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162 views

1 answer

android - "Gradle Version 2.10 is required." Error

As I've been using classpath 'com.android.tools.build:gradle:+' In the build.gradle file, I got the following ... , but no luck. Any help would be appreciated. Question&Answers:os...

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

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95 views

1 answer

java - Android Eclipse - Could not find *.apk

I know this question has been asked before and I have seen a plethora of solutions out there, yet none seem ... .keystore, United States as related to issue 834 Question&Answers:os...

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

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150 views

1 answer

r - `levels<-`( What sorcery is this?

In an answer to another question, @Marek posted the following solution: https://stackoverflow.com/a/10432263/ ... increase my magical ability in this domain? Question&Answers:os...

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

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