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Do SoftReference and WeakReference really only help when created as instance variables? Is there any benefit to using them ... a waste of code? See Question&Answers more detail:os...

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node.js - Using multiple parameters in URL in express

I am using Express with Node and I have a requirement in which the user can request the URL as: http://myhost/fruit/ ... way to do this. Is it? See Question&Answers more detail:os...

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Get ID of last inserted document in a mongoDB w/ Java driver

Is there an easy way to get the ID (ObjectID) of the last inserted document of a mongoDB instance using the Java driver? See Question&Answers more detail:os...

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r - Merge or combine by rownames

In the example below I have two datasets (Z and A). I want to merge or combine these sets by the ILMN numbers. ... ILMN_1653026 "0" "0" "0" GRA See Question&Answers more detail:os...

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tsql - How to calculate difference in hours (decimal) between two dates in SQL Server?

I have to calculate the difference in hours (decimal type) between two dates in SQL Server 2008. I couldn't find ... it should return me 1.5. See Question&Answers more detail:os...

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many to many - DynamoDB M-M Adjacency List Design Pattern

Referring to amazon. I was wondering if anyone could help me. The first image is of the table, and the second is ... you all in advance!!! :-) See Question&Answers more detail:os...

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Is it necessary or useful to inherit from Python's object in Python 3.x?

In older Python versions when you create a class, it can inherit from object which is as far I understand a ... results (for obvious reasons). See Question&Answers more detail:os...

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ios - Aligning right to left on UICollectionView

this is a pretty straightforward question, but I haven't been able to find a definitive answer to it on SO ... Any help is greatly appreciated! See Question&Answers more detail:os...

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python - Is there a way to make the Tkinter text widget read only?

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cocoa touch - Objective-C Difference between setting nil and releasing

I've learned that in dealloc you do [object release]; but in viewDidUnload (in a UIViewController subclass) you ... reference count is 0 right? See Question&Answers more detail:os...

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svn - How to synchronize two Subversion repositories?

My company has a subsidiary with a slow Internet connection. Our developers there suffer to interact with our ... our version control system. See Question&Answers more detail:os...

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indexing - Swift Xcode Index Freezing or Slow

Maybe this is just me experiencing such an annoying "feature": After upgrading from Xcode 6.0.1 to Xcode 6. ... for running this small project.) See Question&Answers more detail:os...

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what is the proper way to convert between mysql datetime and python timestamp?

according to http://dev.mysql.com/doc/refman/5.0/en/datetime.html. i got to find a way to convert the string value ' ... '%Y-%m-%d %H:%M:%S')) See Question&Answers more detail:os...

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macos - How to use dylib in Mac OS X (C++)

I made an application (an executable) calling some dylib successfully. However, the dylib files and the executable are in ... do for Mac OS X? See Question&Answers more detail:os...

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r - purrr map equivalent of nested for loop

What is the purrr::map equivalent of: for (i in 1:4) { for (j in 1:6) { print(paste(i, j, sep = "-")) } } ... print(paste(.x, ????, sep = "-"))) See Question&Answers more detail:os...

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xcode - Uploading archive error: "Missing iOS Distribution signing identity for ..."

I'm trying to upload my iOS app archive to iTunes Connect using Xcode, but when I click "Upload to App Store" ... on my computer back 1 day. See Question&Answers more detail:os...

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reactjs - Callback when DOM is loaded in react.js

I want to have a callback invoked on my react.js component when it's DOM element (including all child nodes) is ... like <body> and <img>. See Question&Answers more detail:os...

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.net - How do I store a dictionary object in my web.config file?

I'd like to store a simple key/value string dictionary in my web config file. Visual Studio makes it easy ... >value2</string> </ArrayOfString> See Question&Answers more detail:os...

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Producing a vector graphics image (i.e. metafile) in R suitable for printing in Word 2007

First a caveat: I posted this question here on SuperUser, but it is clearly the wrong place to ask R questions ... in focus on the photograph. See Question&Answers more detail:os...

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android - Insert a new contact intent

For one of my apps, I need the user to select one of his existing contacts or to create a new one. ... : Problem solved. Check my answer. See Question&Answers more detail:os...

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android - How to change color of vector drawable path on button click

With the new android support update, vector drawables get backward compatibility. I have a vector image with various ... then change the color. See Question&Answers more detail:os...

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Perspective correction in OpenCV using python

I am trying to do a perspective correction of a tilted rectangle ( a credit card), which is tilted in all ... . Any help would be appreciated. See Question&Answers more detail:os...

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php - What Does Using A Single Pipe '|' In A Function Argument Do?

Take for instance the following code: phpinfo(INFO_MODULES | INFO_ENVIRONMENT | INFO_VARIABLES); A single argument is ... an array instead? See Question&Answers more detail:os...

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amazon web services - How to use MFA with AWS CLI?

How do I type in the MFA code when using the AWS CLI? I have checked the documentation page of IAM http://docs.aws. ... -01-13T23:15:43Z" } ] } See Question&Answers more detail:os...

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java - Access Spring beans from a servlet in JBoss

I want to write a simple servlet in JBoss which will call a method on a Spring bean. The purpose is to allow ... a sledgehammer to crush a nut. See Question&Answers more detail:os...

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c# - String interpolation in a Razor view?

Is this supported? If so, is there some trick to enabling it? I'm assuming Razor isn't using a new ... getting CS1056: Unexpected character '$' See Question&Answers more detail:os...

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r - How to group data.table by multiple columns?

I'm using the data.table package to speed up some summary statistic collection on a data set. I'm curious if ... but no luck. Any suggestions? See Question&Answers more detail:os...

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android - is it possible to create listview inside dialog?

i have created a custom dialog class public class NewPost extends Dialog { // functionality } now my requirement ... any interface or what? See Question&Answers more detail:os...

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