Today's Question:  What does your personal desk look like?        GIVE A SHOUT

SEARCH KEYWORD -- Address

  Pointers, arrays, and string literals

A recently posted question on Stack Overflow highlighted a common misconception about the role of pointers and arrays held by many programmers learning C.The confusion stems from a misunderstanding concerning the role of pointers and strings in C. A pointer is an address in memory. It often points to an index in an array, such as in the function strtoupper in the following code:void strtoupper(char *str) { if (str) { // null ptr check, courtesy of Michael while (...

   char pointer,initialization,literal,cann     2011-09-22 13:29:23

  Some cases where MySQL cannot be started

After installing MySQL, when we try to start MySQL, sometimes we may not be able to start it. The reasons can be different. We share some general cases where MySQL cannot be started. Case 1: Directory or file permission issue If the permission is set wrongly in MySQL's $datadir and its sub directories or files, MySQL will not be able to read and write files normally. Error message: mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data /usr/local/mysql/bin/mysqld_safe: lin...

   MySQL,Error,Log     2013-08-15 03:32:36

  C vs Java Complete Comparison

Similarities: Java and C have same syntax operators. Difference—thinking Two paradigms: Java: Object oriented language C: Structured language Differences: --Syntax No preprocessor Java does not include a preprocessor and does not define any analogs of the #define, #include, and #ifdef directives. Constant definitions are replaced with static final fields in Java. (See the java.lang.Math.PI field for an example.) Macro definitions are not available in...

   C,Java,Comparison,Difference,Similaritie     2011-10-06 12:46:39

  Comex, the Hacker Behind JailbreakMe.com, Hired as Apple Intern

Comex, the hacker behind JailbreakMe.com, is joining Apple as an intern. JailbreakMe.com made it extremely easy for iOS users to jailbreak their devices simply by visiting a website. He announced the hiring on Twitter: It's been really, really fun, but it's also been a while and I've been getting bored. So, the week after next I will be starting an internship with Apple. Forbes unmasked Comex as Nicholas Allegra, a 19-year old Brown University student from Chappaqua, NY, by Forbes. In that arti...

   Apple,Comex,Jailbrealme,Intern,Leak,Hack     2011-08-26 02:35:57

  How Computers Boot Up

The previous post described motherboards and the memory map in Intel computers to set the scene for the initial phases of boot. Booting is an involved, hacky, multi-stage affair – fun stuff. Here’s an outline of the process: An outline of the boot sequence Things start rolling when you press the power button on the computer (no! do tell!). Once the motherboard is powered up it initializes its own firmware – the chipset and other tidbits – and tries to ...

   Computer,Boot-up,Rationale     2012-04-11 13:43:02

   How to Calculate Distance in Asp.Net MVC with Google Maps

Internet users are vastly dependent on both Google and Bing mapping tools. The API available for developers provides them an ability to add value to the solutions developed by them.There is no such requirement of using everything. There are times when only a snippet can make a big difference to the app users. In this article, asp.net development experts will explain how to use Google Maps APIs and help office staff to calculate distance. When a team is travelling for the job, they either ride on...

   ASP.NET MVC     2017-03-10 06:29:23

  HTTP is not a transport protocol, HTTP is not RPC

Recently there was a question on the forums asking why we encourage usage of HttpRequestMessage<T> / HttpResponseMessage<T> in the signature of a web api implementation. The point made in the post is that if you have an ICalculator contract which your API implements, then it’s violating SOC / inappropriate to have those messages as params and in the contract. The argument is valid when looking at HTTP from the standpoint of an RPC mechanism, which is actually a quite co...

   HTTP,Transport protocol,RPC     2012-01-19 10:14:26

  What will the value of Integer.valueOf(127) == Integer.valueOf(127) be in Java?

Do you really understand how Java does the integer comparison? OK, ignore the statements in the post title. What we are interested in is another set of comparison statements. Let's first see below code snippet. public class IntegerComparison { public static void main(String[] args) { Integer a = 127, b = 127; Integer c = 128, d = 128; System.out.println(a == b); System.out.println(c == d); } } What do you think the output will be? Are they both displaying true? You will find out t...

   JAVA,==,EQUALSTO     2018-01-13 22:18:15

  The Go Pointer Magic

Go is a language with the pointer type, by which we can Pass pointer into a function and update value in-place. Add methods to a struct as (* T) A, which is different from (T) A(). However, the pointer is type-safe in Go, meaning that there are such restrictions of the pointer. Different types of pointers are unconvertible. Pointer type cannot be used for calculation. Pointer types cannot be compared, either == nor !=. No mutual assignment between different pointer-...

   GOLANG,POINTER,UNSAFE     2021-10-03 02:18:57

  Four reasons we don’t apply the 80/20 rule

Why can’t we make more use of the 80/20 rule? I’ll review what the 80/20 rule is, explain how it can be powerful, then give four reasons why we don’t take advantage of it. What is the 80/20 rule? The 80/20 rule is amazing when you first learn about it. It says that efforts and results are often very unevenly distributed. You’ll get 80% of your results from the first 20% of your efforts. For example, maybe your top 20% of customers will provide 80% of your profit. O...

   80/20,Development,Profit,Revenue,Effort     2012-02-08 10:03:50

RECENT