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In Objective-C instance data can be public, protected or private. For example: @interface Foo : NSObject { @public ... to limit the visibility of data in Swift? Question&Answers:os...

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javascript - How to clone a Date object?

Assigning a Date variable to another one will copy the reference to the same instance. This means that changing ... I actually clone or copy a Date instance? Question&Answers:os...

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laravel - Migration: Cannot add foreign key constraint

I'm trying to create foreign keys in Laravel however when I migrate my table using artisan i am thrown the ... Hope someone can help me to get started. Question&Answers:os...

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How do I build the Android SDK with hidden and internal APIs available?

I want to rebuild the Android SDK (or rather only the android.jar) to include hidden and internal APIs. I could ... it I would like to use the modified SDK. Question&Answers:os...

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c# - Creating a ZIP archive in memory using System.IO.Compression

I'm trying to create a ZIP archive with a simple demo text file using a MemoryStream as follows: using ( ... to create the ZIP archive without the FileStream? Question&Answers:os...

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javascript - Sending a JSON to server and retrieving a JSON in return, without JQuery

I need to send a JSON (which I can stringify) to the server and to retrieve the resulting JSON on the user ... AJAX. It should not be closed as duplicate. Question&Answers:os...

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bash - Checking from shell script if a directory contains files

From a shell script, how do I check if a directory contains files? Something similar to this if [ -e /some/dir/* ... one only works with exactly 0 or 1 files). Question&Answers:os...

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Any decent text diff/merge engine for .NET?

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ios - When to use dequeueReusableCellWithIdentifier vs dequeueReusableCellWithIdentifier : forIndexPath

There are two overloads for dequeueReusableCellWithIdentifier and I'm trying to determine when should I use one vs ... not sure how to interpret that though? Question&Answers:os...

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python - Encoding an image file with base64

I want to encode an image into a string using the base64 module. I've ran into a problem though. How do I ... NULL bytes, not str What am I doing wrong? Question&Answers:os...

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How to remove responsive features in Twitter Bootstrap 3?

Since Bootstrap 3 there's no longer seperate files for responsive and standard stylesheets. So how can I easily remove the responsive features? Question&Answers:os...

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r - YAML current date in rmarkdown

I'm wondering if there's a trick to put the current date in the YAML front-matter of a .rmd document ... -> <Anonymous> -> .Call Any workaround? Question&Answers:os...

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facebook - Send private messages to friends

I need to get via Facebook connect user's info and send a private message to all of his friends. Is it possible? Question&Answers:os...

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sql server - SQL: IF clause within WHERE clause

Is it possible to use an IF clause within a WHERE clause in MS SQL? Example: WHERE IF IsNumeric(@OrderNumber) = ... OrderNumber LIKE '%' + @OrderNumber + '%' Question&Answers:os...

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.net - Most efficient way to check for DBNull and then assign to a variable?

This question comes up occasionally, but I haven't seen a satisfactory answer. A typical pattern is (row is a DataRow): ... "])) { variable = temp.ToString(); } Question&Answers:os...

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java - How to create war files

What are the best practices of creating war files (using eclipse) to run on tomcat? tutorials, links, examples are highly appreciated. Question&Answers:os...

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python - Django DB Settings 'Improperly Configured' Error

Django (1.5) is workin' fine for me, but when I fire up the Python interpreter (Python 3) to check some ... default. } } ...how is this improperly configured? Question&Answers:os...

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r - Read all files in a folder and apply a function to each data frame

I am doing a relatively simple piece of analysis which I have put into a function, on all the files in a particular ... (i.e. Df1.summary). Many thanks, Katie Question&Answers:os...

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c++ - How to call erase with a reverse iterator

I am trying to do something like this: for ( std::list< Cursor::Enum >::reverse_iterator i = m_CursorStack. ... way to remove this element from the list? Question&Answers:os...

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spam - How to prevent robots from automatically filling up a form?

I'm trying to come up with a good enough anti-spamming mechanism to prevent automatically generated input. I've ... a button is clicked to prevent overloads). Question&Answers:os...

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Dot (".") operator and arrow ("->") operator use in C vs. Objective-C

I'm trying to wrap my head around some of the differences in usage and syntax in C vs. Objective-C. In ... different? Can anyone help clarify this for me? Question&Answers:os...

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github - Git SSH error: "Connect to host: Bad file number"

I followed the git guide but I have this strange issue when trying to connect to github: $ ssh -v ... .sshid_rsa" TCPKeepAlive yes IdentitiesOnly yes Any idea? Question&Answers:os...

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javascript - Getting the object's property name

I was wondering if there was any way in JavaScript to loop through an object like so. for(var i in myObject) ... to achieve. Thanks for any help you can offer. Question&Answers:os...

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Using Spring MVC Test to unit test multipart POST request

I have the following request handler for saving autos. I have verified that this works when I use e.g. cURL. ... will add 100 in bounty to the correct answer! Question&Answers:os...

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c++ - Magic number in boost::hash_combine

The boost::hash_combine template function takes a reference to a hash (called seed) and an object v. According ... someone explain what the magic constant is? Question&Answers:os...

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javascript - Setting query string using Fetch GET request

I'm trying to use the new Fetch API: I am making a GET request like this: var request = new Request({ url ... equivalent way to do that with the new Fetch API? Question&Answers:os...

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java - Behaviour of final static method

I have been playing around with modifiers with static method and came across a weird behaviour. As we know, ... when static method cannot be overridden at all? Question&Answers:os...

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php - What's the best way to get the last element of an array without deleting it?

Ok, I know all about array_pop(), but that deletes the last element. What's the best way to get the last element ... Notice: Undefined offset: 2 in - on line 4 Question&Answers:os...

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