In Python 2, what is the difference between '/' and '//' when used for division?

In Python 2, what is the difference between '/' and '//' when used for division?

Is there a benefit to using one over the other? In Python 2, they both seem to return the same results:>>> 6/32>>> 6//32 1:In Python 3.0, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the lat

What is Double Brace initialization in Java?

What is Double Brace initialization in Java?

What is Double Brace initialization syntax ({{ ... }}) in Java? 1:Double brace initialisation creates an anonymous class derived from the specified class (the outer braces), and provides an initialiser block within that class (the inner

How to get UTF-8 working in Java webapps?

How to get UTF-8 working in Java webapps?

I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ЦжФ for special cases.My setup is the following:Development environment: Windows XPPr

Converting JSON data to Java object

Converting JSON data to Java object

I want to be able to access properties from a JSON string within my Java action method. The string is available by simply saying myJsonString = object.getJson(). Below is an example of what the string can look like:{ 'title': 'Computinga

What is the most effective way for float and double comparison?

What is the most effective way for float and double comparison?

What would be the most efficient way to compare two double or two float values?Simply doing this is not correct:bool CompareDoubles1 (double A, double B){ return A == B;}But something like:bool CompareDoubles2 (double A, double B) { dif

Why does my JavaScript get a “No 'Access-Control-Allow-Origin' header is present on the re

Why does my JavaScript get a “No 'Access-Control-Allow-Origin' header is present on the re

I am trying to do authorization using JavaScript by connecting to the RESTful API built in Flask. However, when I make the request, I get the following error: XMLHttpRequest cannot load http://myApiUrl/login. No 'Access-Control-Allow-Origi

maven-compiler-plugin exclude

maven-compiler-plugin exclude

I have a following problem.I would like to exclude some .java files (**/jsfunit/*.java) during the test-compile phase and on the other side I would like to include them during the compile phase (id i start tomcat with tomcat:run goal)My pom

what is the basic difference between jobconf and job?

what is the basic difference between jobconf and job?

hi i wanted to know the basic difference between jobconf and job objects,currently i am submitting my job like thisJobClient.runJob(jobconf);i saw other way of submitting jobs like thisConfiguration conf = getConf();Job job = new Job(conf,

Android Studio Gradle failed to complete Gradle execution

Android Studio Gradle failed to complete Gradle execution

I am trying to run appengineUpdate to deploy my backend and am receiving the following error message:Failed to complete Gradle execution.Cause:Gradle build daemon disappeared unexpectedly (it may have been stopped, killed or may have crashe

How to use AngularJS 2 without npm and Node.js?

How to use AngularJS 2 without npm and Node.js?

The current versions of AngularJS 2 references always npm based configurations.Is it possible to manage a project of AngularJS 2 without npm?Is it possible to use AngularJS 2 in production statically without npm/Node.jsI already found answe

Eclipse hangs on startup [duplicate]

Eclipse hangs on startup [duplicate]

This question already has an answer here: How do I prevent Eclipse from hanging on startup? 33 answers I have problem with running my Eclipse. I tried

PHP NumberFormatter and Currency, can't set precision

PHP NumberFormatter and Currency, can't set precision

I want to set a precision of 0 when using the NumberFormatter PHP class (from Intl extension) with currency. However I've got some strange result. Here:$numberFormatter = new NumberFormatter('en-US', NumberFormatter::CURRENCY);$numberFormat

What exactly is the zookeeper quorum setting in hbase-site.xml?

What exactly is the zookeeper quorum setting in hbase-site.xml?

What exactly is the zookeeper quorum setting in hbase-site.xml? 1:As described in hbase-default.xml, here's the setting: Comma separated list of servers in the ZooKeeper Quorum. For example, "host1.mydomain.com,host2.mydomain.com,host3.

Ways to manage DB migrations with SQLAlchemy? [closed]

Ways to manage DB migrations with SQLAlchemy? [closed]

I've looked at sqlalchemy-migrate, but it just seems like a lot of work and I haven't been able to find any useful examples.Anyone care to share how they handle this? 1:Check out new project Alembic: http://readthedocs.org/docs/alembic/

slf4j & log4j2 maven setup query

slf4j & log4j2 maven setup query

I am using log4j2 and slf4j in my project & using maven for the build. I am using the following pom file (releveant dependencies shown only) but I am getting the error copied below with this pom file - any idea what I need to add/remove to

multiprocessing with large data

multiprocessing with large data

I am using multiprocessing.Pool() to parallelize some heavy computations.The target function returns a lot of data (a huge list). I'm running out of RAM.Without multiprocessing, I'd just change the target function into a generator, by yield

Is there a concept of “pointers” or “unsafe code” in Java?

Is there a concept of “pointers” or “unsafe code” in Java?

Yesterday I was attending a talk by a CTO of a reputed European Company, and he told until recently he did not know that java has pointers. On confronting him he said he is absolutely sure about existence of pointers/unsafe code in java.

Number to English Word Conversion Rails

Number to English Word Conversion Rails

Anybody knows the method to convert the numericals to english number words in rails? I found some Ruby scripts to convert numbericals to english words for corresponding words. Instead of writing a script in ruby, i feel that direct function

Why won't re.groups() give me anything for my one correctly-matched group?

Why won't re.groups() give me anything for my one correctly-matched group?

When I run this code:print re.search(r'1', '1').groups() I get a result of (). However, .group(0) gives me the match.Shouldn't groups() give me something containing the match?Update: Thanks for the answers. So that means if I do re.search()

Doctrine2 Insert and retrieve new insert ID

Doctrine2 Insert and retrieve new insert ID

In Doctrine2 using some thing like:$user = array('username' => 'example', 'passsword' => 'changeme');$conn->insert('users', $user);How would I then get the last ID of the user I just inserted? If it is not possible to do this then how do yo

Could not find thread_safe-0.3.0 in any of the sources

Could not find thread_safe-0.3.0 in any of the sources

I get this error while running bundle install in a rails app,I thought the latest version is 0.2.0...could anybody help me out on this?bundle installFetching gem metadata from https://rubygems.org/..........Fetching additional metadata from

Eclipse ctrl+right does nothing

Eclipse ctrl+right does nothing

I'm editing a Java source in Eclipse (Version: Kepler Release). I'm used no navigate text on other editors using Ctrl+Right to move to the next word and Ctrl+Shift+Right to select the next word. But on eclipse nothing happens, the cursor st

Can we call a python method from java? [duplicate]

Can we call a python method from java? [duplicate]

This question already has an answer here: Calling Python in Java? 9 answers I know jython allows us to call a java method from any java's classfile as

IP Address? - Cocoa

IP Address? - Cocoa

How would I make a GUI program that displays your Ip address with a click of a button? Please, no difficult explanations, I just started Cocoa not long ago.Thanks,Kevin 1:You can get IP address through two ways:1- if you want to get the

QueryStringBinder for List[String]

QueryStringBinder for List[String]

Using Play 2.0.1 I defined the following route:GET /demo/list controllers.Demos.listDemos(page: Int ?= 0, orderBy: Int ?= 1, nameFilter: String ?= "", versionFilter: Long ?= -1, tagFilter: List[String] ?= Nil)But I get this error on compil