video editing for is streamlined for fast linear operations over video. It has batch-processing capabilities for processing large Numbers of files and can be extended with third-party video filters. VirtualDub is mainly geared toward processing AVI files, although it can read (not write) MPEG-1 and also handle sets of BMP images.
Secure Programming Cookbook for C and C++ is an important new resource for developers serious about writing secure code for Unix(including Linux) and Windows environments. This essential code companion covers a wide range of topics, including safe initialization, access control, input validation, symmetric and public key cryptography, cryptographic hashes and MACs, authentication and key exchange, PKI, random Numbers, and anti-tampering.
By Tom Christiansen and Nathan Torkington
ISBN 1-56592-243-3
First Edition, published August 1998.
(See the catalog page for this book.)
Search the text of Perl Cookbook.
Table of Contents
Copyright Page
Foreword
Preface
Chapter 1: Strings
Chapter 2: Numbers
Chapter 3: Dates and Times
Chapter 4: Arrays
Chapter 5: Hashes
Chapter 6: Pattern Matching
Chapter 7: File Access
Chapter 8: File Contents
Chapter 9: Directories
Chapter 10: Subroutines
Chapter 11: References and Records
Chapter 12: Packages, Libraries, and Modules
Chapter 13: Classes, Objects, and Ties
Chapter 14: Database Access
Chapter 15: User Interfaces
Chapter 16: Process Management and Communication
Chapter 17: Sockets
Chapter 18: Internet Services
Chapter 19: CGI Programming
Chapter 20: Web Automation
Index
Colophon
Distribution generator
Here is a simple generator which can build some distributions with given properties.
Distributions generator (compile with -lm)
Typical use might be:
./distributions -u -m 1 -M 10 -n 100 -s 500
Generates a distribution of 100 uniform random Numbers between 1 and 10, such that the sum of Numbers is 500.
./distributions -p -2.2 -m 1 -M 100 -n 200 -s 500
Idem with 200 Numbers between 1 and 100 following a power law with exponent -
HDOJ 1047
One of the first users of BIT s new supercomputer was Chip Diller. He extended his exploration of powers of 3 to go from 0 to 333 and he explored taking various sums of those Numbers.
``This supercomputer is great, remarked Chip. ``I only wish Timothy were here to see these results. (Chip moved to a new apartment, once one became available on the third floor of the Lemon Sky apartments on Third Street.)
The purpose of this paper is to provide a practical introduction to the discrete Kalman
filter. This introduction includes a description and some discussion of the basic
discrete Kalman filter, a derivation, description and some discussion of the extended
Kalman filter, and a relatively simple (tangible) example with real Numbers &
results.
北京大學ACM比賽題目
In 1742, Christian Goldbach, a German amateur mathematician, sent a letter to Leonhard Euler in which he made the following conjecture:
Every even number greater than 4 can be
written as the sum of two odd prime Numbers.
For example:
8 = 3 + 5. Both 3 and 5 are odd prime Numbers.
20 = 3 + 17 = 7 + 13.
42 = 5 + 37 = 11 + 31 = 13 + 29 = 19 + 23.
Today it is still unproven whether the conjecture is right. (Oh wait, I have the proof of course, but it is too long to write it on the margin of this page.)
Anyway, your task is now to verify Goldbach s conjecture for all even Numbers less than a million.
Microsoft .net IL 匯編語言程序設計指南.
To tell the truth, I don t think I had much choice in this matter. Let me explain. With Microsoft .NET technology taking the world by storm, with more and more information professionals getting involved, large Numbers of books covering various aspects of this technology have started to arrive—and none too soon. Alas, virtually all of these books are dedicated to .NET-based programming in high-level languages and rapid application development (RAD) environments. No doubt this is extremely important, and I am sure all these books will have to be reprinted to satisfy the demand. But what about the plumbing?
This is a Java library for performing floating-point calculations on
small devices such as mobile phones which lack native support for
floating-point Numbers.
