<< < … 158 159 160 161 162 163 164 165 166 167 168 … > >>   Sort: Date

When we go for html server controls and when we go for web server controls?
When we go for html server controls and when we go for web server controls? Server controls are a part of ASP.net. When a server control is used there will be an extra overhead on the server to create the control at runtime and accordingly set the values. HTML controls are static controls and are ea...
2014-01-07, 1899👍, 0💬

What are the different methods to access Database in .NET ?
What are the different methods to access Database in .NET ? What are the different methods to access Database in .NET ? * OleDB,ODBC,SQLClient * OleDB, JDBC, SQLServer * ODBC-JDBC, DataSet, SQLClient * Datasource, DataSet, DSN OleDB,ODBC,SQLClient
2014-07-17, 1895👍, 0💬

Must I free allocated memory before the program exits?
Must I free allocated memory before the program exits? You shouldn't have to. A real operating system definitively reclaims all memory and other resources when a program exits; the system cannot afford to have memory integrity depend on the whims of random programs. (Strictly speaking, it is not eve...
2016-03-28, 1893👍, 0💬

Why does the call char scanf work?
Why does the call char s[30]; scanf("%s", s); work? I thought you always needed an & on each variable passed to scanf. You always need a pointer; you don't necessarily need an explicit &amp;. When you pass an array to scanf, you do not need the &, because arrays are always passed to func...
2015-10-30, 1893👍, 0💬

What’s Singleton activation mode?
What’s Singleton activation mode? A single object is instantiated regardless of the number of clients accessing it. Lifetime of this object is determined by lifetime lease.
2013-11-15, 1893👍, 0💬

Why doesnt strcat work? ....
Why doesn't strcat(string, '!'); work? There is a very real difference between characters and strings, and strcat concatenates strings. A character constant like '!' represents a single character. A string literal between double quotes usually represents multiple characters. A string literal like "!...
2016-03-14, 1892👍, 0💬

I dont understand why I cant use const values in initializers ....
I don't understand why I can't use const values in initializers and array dimensions, as in const int n = 5; int a[n]; The const qualifier really means ``read-only''; an object so qualified is a run-time object which cannot (normally) be assigned to. The value of a const-qualified object is therefor...
2016-01-08, 1890👍, 0💬

So what could go wrong? Are there really any systems where void main doesnt work?
So what could go wrong? Are there really any systems where void main doesnt work? It has been reported that programs using void main() and compiled using BC++ 4.5 can crash. Some compilers (including DEC C V4.1 and gcc with certain warnings enabled) will complain about void main().
2015-12-18, 1888👍, 0💬

If I have a char * variable pointing to the name of a function ...
If I have a char * variable pointing to the name of a function, how can I call that function? Code like extern int func(int, int); char *funcname = "func"; int r = (*funcname)(1, 2); or r = (*(int (*)(int, int))funcname)(1, 2); doesn't seem to work. By the time a program is running, information abou...
2015-02-20, 1886👍, 0💬

How can I determine whether a machines byte order is big-endian or little-endian?
How can I determine whether a machines byte order is big-endian or little-endian? The usual techniques are to use a pointer: int x = 1; if(*(char *)&amp;x == 1) printf("little-endian\n"); else printf("big-endian\n"); or a union: union { int i; char c[sizeof(int)]; } x; x.i = 1; if(x.c[0] == 1) p...
2015-02-16, 1885👍, 0💬

People claim that optimizing compilers are good and that we no longer have to write things in assembler for speed
People claim that optimizing compilers are good and that we no longer have to write things in assembler for speed, but my compiler can't even replace i/=2 with a shift. A: Was i signed or unsigned? If it was signed, a shift is not equivalent (hint: think about the result if i is negative and odd), s...
2015-02-06, 1882👍, 0💬

Explain features of SQL Server like Scalibility, Availability, Integration with Internet.
Explain features of SQL Server like Scalibility, Availability, Integration with Internet. Scalibility - The same Microsoft SQL Server 2000 database engine operates on Microsoft Windows 2000 Professional, Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server, Windows 98, and Windows M...
2014-10-27, 1881👍, 0💬

What doesu mean by .NET framework?
What doesu mean by .NET framework? The .NET Framework is an environment for building, deploying, and running Web Services and other applications. It consists of three main parts: the Common Language Runtime, the Framework classes, and ASP.NET
2013-12-05, 1881👍, 0💬

I a'm getting strange syntax errors inside lines I have ifdeffed out.
I a'm getting strange syntax errors inside lines I have ifdeffed out. Under ANSI C, the text inside a ``turned off'' #if, #ifdef, or #ifndef must still consist of ``valid preprocessing tokens.'' This means that the characters " and ' must each be paired just as in real C code, and the pairs mustn't ...
2016-01-29, 1878👍, 0💬

What property must you set, and what method must you call in your code, in order to bind the data from some data source to the R
What property must you set, and what method must you call in your code, in order to bind the data from some data source to the Repeater control? You must set the DataMember property which Gets or sets the specific table in the DataSource to bind to the control and the DataBind method to bind data fr...
2014-01-29, 1878👍, 0💬

What was noalias and what ever happened to it?
What was noalias and what ever happened to it? noalias was another type qualifier, in the same syntactic class as const and volatile, which was intended to assert that an object was not pointed to (``aliased'') by other pointers. The primary application, which is an important one, would have been fo...
2015-12-02, 1877👍, 0💬

What does the message Automatic aggregate intialization is an ANSI feature mean?
What does the message Automatic aggregate intialization is an ANSI feature'' mean? My compiler is complaining about valid ANSI code. Messages like these are typically emitted by pre-ANSI compilers which have been upgraded just enough to detect (but not properly translate) new C features which were i...
2015-11-30, 1875👍, 0💬

Is there any inbuilt paging (for example shoping cart, which will show next 10 records without refreshing) in ASP? How will you
Is there any inbuilt paging (for example shoping cart, which will show next 10 records without refreshing) in ASP? How will you do pating? Use DataGrid control which has in-built paging features for the purpose.
2014-09-26, 1874👍, 0💬

What should one do to make class serializable?
What should one do to make class serializable? Answers1: To make a class serializable is to mark it with the Serializable attribute as follows. [Serializable] public class MyObject { public int n1 = 0; public int n2 = 0; public String str = null; }
2013-12-26, 1874👍, 0💬

How can I use a preprocessorif expression to ? ....
How can I use a preprocessor #if expression to tell whether a machine's byte order is big-endian or little-endian? You probably can't. The usual techniques for detecting endianness involve pointers or arrays of char, or maybe unions, but preprocessor arithmetic uses only long integers, and there is ...
2016-02-01, 1872👍, 0💬

I can write C code that looks more like Pascal? ....
Here are some cute preprocessor macros: #define begin { #define end } With these, I can write C code that looks more like Pascal. What do y'all think? Use of macros like these, though perhaps superficially attractive, is generally discouraged; in severe cases the practice is called ``preprocessor ab...
2016-02-24, 1871👍, 0💬

How can I tell how much destination buffer space ...
How can I tell how much destination buffer space I'll need for an arbitrary sprintf call? How can I avoid overflowing the destination buffer with sprintf? When the format string being used with sprintf is known and relatively simple, you can sometimes predict a buffer size in an ad-hoc way. If the f...
2015-10-19, 1868👍, 0💬

Are pointers really faster than arrays?
Are pointers really faster than arrays? How much do function calls slow things down? Is ++i faster than i = i + 1? Precise answers to these and many similar questions depend of course on the processor and compiler in use. If you simply must know, you'll have to time test programs carefully. (Often t...
2015-02-09, 1866👍, 0💬

What is the ANSI C Standard?
What is the ANSI C Standard? In 1983, the American National Standards Institute (ANSI) commissioned a committee, X3J11, to standardize the C language. After a long, arduous process, including several widespread public reviews, the committee's work was finally ratified as ANS X3.159-1989 on December ...
2016-01-15, 1864👍, 0💬

<< < … 158 159 160 161 162 163 164 165 166 167 168 … > >>   Sort: Date