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0 answers

spectral sequence of a bicomplex equipped with a group action

Let $(A_1^\bullet,\partial_1)$ and $(A_2^\bullet,\partial_2)$ be complexes of finite dimensional $\mathbb{C}$-vector spaces. We suppose that $(A_1^\bullet,\partial_1)$ and $(A_2^\bullet,\partial_2)$ ...

1 answer

Looking for shorter alternatives to `range(…)`

The best solution I've found so far for a golf code puzzle I'm working on includes two rather fat-looking invocations of range. I'm very new at code golf, especially in Python, so I could use a few ...

1 answers | 48 secs ago by kjo on Programming Puzzles & Code Golf codegolf.stackexchange.com
3 answers

2.0 speeds on USB hub?

How capable are USB hubs? I have an AirPort Extreme router with a printer attached (it's not powered by USB). I want to extend this and add two hard drives (one for Time Machine and the other for ...

3 answers

History, Diff and reverts of persisted objects

In a Spring MVC / Spring Data project I need to implement a mechanism to track history, present differences and revert the changes to an entity object. Let's say I have an entity with relationships ...

0 answers

back up windows 7 and my previous data of windows

I used LiveUSB to use ubuntu. Then I thought I wanted to use real ubuntu from USB because I thought the ubuntu from LiveUSB is just a test for ubuntu. So I installed ubuntu from Desktop icon on test ...

1 answer

Step by step instructions on how to remove grub2 or mount the EFI partition and delete files (UEFI)

everyone very sorry if this is a duplicate question however I cannot seem to get the instructions on other questions to work. I have been trying to uninstall grub and Ubuntu. I have looked at a lot of ...

0 answers

How do I create an outline around a raster image?

Let's say I have a PNG image (with transparent background) like the below simplified example. What is the quickest way with either Illustrator or Photoshop to create a vector path/image (i.e., ...

2 answers

Drawing with turtle(python) using PyCharm

I'm running the latest PyCharm Pro version and trying to run the below code from a scratch file but it doesn't seem to work import turtle wn = turtle.Screen() alex = turtle.Turtle() ...

1 answer

standard way to avoid both n+1 and the cartesian product issues while fetching collections with JPA

When one has an entity with fields part of which are collections, one wishes to fetch the data with the smallest number of queries possible and using as less memory as possible. The first problem is ...

4 answers

Are there any objections to Winter Bash hats?

Winter Bash is coming soon. Each SE site can choose not to participate. I can't think of any reason why we wouldn't participate, particularly since each user has the option to turn the feature off and ...

0 answers

Injection Service Spring on ManagedBean Failed NPE

Using, Spring 3, Hibernate 4, JSF 2.0, PrimeFaces My Spring config: <context:component-scan base-package="com.tds.erp"/> <context:annotation-config/> <context:spring-configured/> ...

2 answers

How to convert NetCDF file to Grib2 or Grib files

I'm in trouble to read NetCDF file data. Basically NetCDF file contains Ocean current data. How do you convert a NetCDF file to a Grib2 or Grib file? I already have procedure to read data from Grib2 ...

2 answers | 1 min ago by philanthropist on Geographic Information Systems gis.stackexchange.com
3 answers

how do you solve $a^2+b^2+c^2=d^3$

let $ a,b,c,d$ be 4 integers such that $\gcd(a,b,c,d)=1$. How do you find the integral solutions of the equation: $$a^2+b^2+c^2=d^3$$

1 answer

cURL - prompt script works while same request with curl-php doesn't (Internal server error 500)

I'm trying to login in a website using my username and password. I tried using cUrl from the prompt and i managed to do it in two steps: first of all I send a get request to a page to save the ...

1 answers | 1 min ago by Giosch on Stack Overflow stackoverflow.com
2 answers

How to send a cookie in a URLConnection

What is the proper way to send a 'full' cookie across a URLConnection? I've been using: URL url = new URL(page); URLConnection urlConn = url.openConnection(); ...

1 answer

Escape velocity to leave the water planet in the movie Interstellar

I saw this question and this question on the site a few days ago. It asks about escape velocity from the water-based planet in Interstellar and whether the black hole had any effect. Now, one question ...

0 answers

Export PATH issue in Mac OS X Yosemite

I want to install gradle in my local mac machine and I'm using Yosemite OS. I try export GRADLE_HOME in .bash_profile, .profile, .bashrc, .zshrc files, but gradle -version command not working. there ...

0 answers

Add metrics to profile page to measure the users influence

In addition to the reputation score there could be additional metrics on a users profile page measuring the influence of the user. The influence of a user can be measured with bibliometric measures, ...

1 answer

How to correct subfloor possible L337 Deflection, when Basement below is Finished

Installing porcelain planks 6"x 36" with 11mm thickness, in main floor Living room that was previously carpeted. House is 2 story town, 13yrs old. Room size across W 18' x Length joist span of ...

0 answers

MITM on program with no proxy settings

I'm trying to inspect the traffic of a program (which is running on my computer) that uses SSL over TCP to a non-standard port. The traffic may or may not be HTTP traffic, likely isn't. Neither ...

1 answer

NSBrowser not Repopulating children from NSTreeController after File Load via Core Data

I have a Core Data based Document backed application making heavy use of cocoa-bindings. I'm using an NSTreeController for populating an NSBrowser. The main entity has a set of children, accessible ...

0 answers

Python: How to code a recursive/fft polynomial?

Right now Im working on an assignment where I have to recursively multiply 2 polynomials in the form of lists (index is the power of x) and I have everything set up where the lists are padded to a ...

1 answer

capture segfault with lldb on OS X

An OS X binary runs into a segfault when invoked under Yosemite (prints "Segmentation fault: 11" on stderr), but when invoked using lldb, no segfault occurs, and the program ends with error code 0. ...

1 answers | 2 mins ago by muffel on Stack Overflow stackoverflow.com
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Which method should be used for the new Google Calendar API v3?

I am on the working on moving my Google Calendar v1 API to the new v3 API using the documentation at https://developers.google.com/google-apps/calendar/firstapp Here's what I have done so far: ...

0 answers

How to make xcode project forget SVN

I have an xcode project that creates a framework, that had an SVN repository. I have a working copy of the the project, but the repository no longer exists. I have created a new workspace with a new ...

2 answers

Wrong number of arguments or invalid property assignment using classes

Could anyone explain why I get this error on line 12? It is clearly an array. Why can I not obtain the value in index position 0 in this way? Do I really need that extra variable (arr)? Option ...

2 answers | 2 mins ago by mgr326639 on Stack Overflow stackoverflow.com
1 answer

PostgreSQL error, type Java_Object does not exist

I am using PostgreSQL and SQL PowerArchitect to design a physical datamodel. As I am using Hibernate which can directly persist Java objects in the database, I thought of using Java_Object as the type ...

1 answer

Could someone explain the Lagrangian Method?

I understand the method, technically, but what is actually going on? We set the gradient of the function equal to the gradient of the constraint (multiplied by a constant), and in doing so, we find ...

1 answer

How to keep a 1 to 1 relation consistent

Consider the following code in Lecturer.java. The setter in Lecture.java has the exact same form. Please also note that the attribute of interest is private. public void setLecture(Lecture lecture) { ...

0 answers

TomEE + OpenJPA using ManyToMany does not work

I am throwing in the towel. I do not understand, how difficult can it be? I have two Entities User and Group, having a many to many relationship. Group manages the relationship. So in Group I have: ...

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