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How do I generate a random number between -1 and 1?

java arrays random grid numbers

Find the average of a list of numbers in O(1) notation - constant time

c++ algorithm visual-c++ numbers average

Is there any way to know which collection view cell is at a specific point?

objective-c ios uicollectionview cgpoint uicollectionviewcell

Simple MySQL Syntax Error [closed]

php mysql sql select

drop db in postgres

postgresql

How can I invoke a method every 5 seconds in android?

java android android-layout android-widget

C++ shared_ptr based singletone what causes link error?

c++ design-patterns singleton shared-ptr

Grails unit tests: Accessing defined beans via grailsApplication

grails grails-2.0

How to get extra information of blobs with SimpleBlobDetector?

c++ opencv blobs

Mybatis resultmap to map values to hash map field of a model

java mybatis

synchronized collection thread safety

c# multithreading collections thread-safety

HTML5 JS fillRect() strange behavior

javascript html html5-canvas

Is there a Regular Expression that will never match any string? [closed]

c# .net regex

Fresh SpeakHere example app has error when recording audio in Simulator/Xcode

ios xcode audio-recording

String.getBytes("UTF-32") returns different results on JVM and Dalvik VM

java android string jvm dalvik

Samba (Cannot Write) issue

permissions samba

Difference between select count(*), count(0), count(100), count(Id) in SQL Server 2008?

sql sql-server-2008

translate while ( x < SomeTreshold ) in haskell

haskell

One-liner to create a data.frame and have columns depend on each other

r dataframe

Regular Expressions with repeated characters

regex computer-science
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