how to get a byte[] representation from a IP in String form in Java
- by Manuel
Suppose I have the IP stored in a String:
String ip = "192.168.2.1"
and I want to get the byte array with the four ints.
How can I do it? Thanks!
Search Results
Search found 17501 results on 701 pages for 'stored functions'.
Page 324/701 | < Previous Page | 320 321 322 323 324 325 326 327 328 329 330 331 | Next Page >
-
-
Get records from a specific month using SQLite
- by soren121
How would I write a SQLite query to select all records from a specific month? My dates are stored as Unix timestamps. PHP code is allowed in your solution if it's required. SQLite2-compatible queries only, please. :)Read the article
-
Why can't I make my parameter like this?
- by mystify
- (void)setPropertyValue:(const *void)inValue forID:(UInt32)propertyID { } The compiler doesn't like the const *void, for some reason. When I have that, it says: error: expected ')' before 'void' When I make the parameter like (UInt32)foo there is no problem. Does const *void only work in functions? I need a parameter which can be a "pointer to anything" like UInt32, Float64, etc.Read the article
-
Serializing Vector<String> to String
- by dhroller
I need to convert a Vector to a String (an vice versa) to be stored in a CHAR field in a database. What is the most efficient way to do this ?Read the article
-
Agregate rows in Oracle SQL statement
- by kilikopela
Hi, I have a table of items stored this way : A1 | B1 A1 | B2 A1 | B3 A2 | B1 A2 | B4 ... And I need to retrieve with a SQL Query : A1 | B1, B2, B3 A2 | B1, B4 ...Read the article
-
Enumerate over an enum in C++
- by jameszhao00
In C++, Is it possible to enumerate over an enum (either runtime or compile time (preferred)) and call functions/generate code for each iteration? Sample use case: enum abc { start a, b, c, end } for each (__enum__member__ in abc) { function_call(__enum__member__); } Plausible duplicates: C++: Iterate through an enum Enum in C++ like Enum in Ada?Read the article
-
Java API Method Run Times
- by Mike
Is there a good resource to get run times for standard API functions? It's somewhat confusing when trying to optimize your program. I know Java isn't made to be particularly speedy but I can't seem to find much info on this at all. Example Problem: If I am looking for a certain token in a file is it faster to scan each line using string.contains(...) or to bring in say 100 or so lines putting them to a local string them performing contains on that chunk.Read the article
-
FORTRAN: determine variable type
- by tibbs
hello, GOOGLE has yet to find an answer for me, so here goes: In FORTRAN, is there a way to determine the TYPE of a variable? E.G., pass the variable type as an argument in a function, to then be able to call type-specific code with that fuction; eliminating the need to have seperate similar functions for each data type. thanks.Read the article
-
jQuery: what if I don't have mouseleave function ?
- by Patrick
hi, I'm using Drupal for a website and I can only use jQuery 1.2.7 (not the most recent versions). I want to fade in / fade out a div element and I'm using mouseover / mouseout functions. However, this element contains some children and when I move the mouse over it, the mouseout function is triggered, because I'm moving over one of its children. Since I don't have mouseleave function, how can I solve this issue ? thanksRead the article
-
Why is T() = T() allowed in C++?
- by Rimo
I believe the expression T() creates an rvalue (by the Standard) However the following code compiles (at least on gcc4.0) class T {... }; int main() { T() = T(); } I know technically this is possible because member functions can be invoked on temporaries and the above is just invoking the operator= on the r-value temporary created from T(). But conceptually this is like assigning a new value to an r-value. Is there a good reason why this is allowed?Read the article
-
Youtube Table structures
- by Shyju
Can anyone share me how does youtube stored video related information in there tables ? What would be the table structure and what would be the various columns in tables and the relations between them ? Thanks in advanceRead the article
-
best way to implement a deck for a card game in python
- by matt1024
What is the best way to store the cards and suits in python so that I can hold a reference to these values in another variable? For example, if I have a list called hand (cards in players hand), how could I hold values that could refer to the names of suits and values of specific cards, and how would these names and values of suits and cards be stored?Read the article
-
Struct inside a class
- by Balakrishnan
I have a class definition of the form class X { public: //class functions private: A_type *A; //other class variables }; and struct A_type is defined as struct A_type { string s1,s2,s3; }; Inside the constructor, I allocate appropriate memory for A and try A[0].s1="somestring"; It shows segmentation fault. Is this kind of declaration invalid, or am I missing somethingRead the article
-
Maintaining file permissions across SVN updates?
- by Mark Mayo
I have a series of python scripts with execute permissions in Linux. They are stored in SVN. If I then run svn up to update them, the overwritten files are back to 644 - ie no execute permissions for anyone. Yes I could just script it to chmod +x * afterwards, but surely there's a way to store permissions in SVN or to maintain them when you update? Any suggestions appreciated.Read the article
-
Determine if a number is a prime with regex?
- by kitlite
I found the following code example for Java on RosettaCode: public static boolean prime(int n) { return !new String(new char[n]).matches(".?|(..+?)\\1+"); } I don't know Java in particular but understand all aspects of this snippet except for the regex itself I have basic to basic-advanced knowledge of Regex as you find it in the built-in PHP functions How does .?|(..+?)\\1+ match prime numbers?Read the article
-
entering data in sql database through asp
- by sushant
pass=session("password") Set objIns=server.CreateObject("adodb.connection") objIns.Open session("Psrconnect") inspass="Insert into passwords(pass) values ('&pass&')" objIns.Execute(inspass) i dont know what should be the syntax to pass the value stored in the variable. with this syntax, the value entered in the database is &pass&. can anyone plz help me out?Read the article
-
How can I make python be more friendly regarding reading and writing Unicode text files?
- by bogdan
I found that even modern Python versions (like 3.x) are not able to detect BOM on text files. I would like to know if there is any module that could add this missing feature to Python by replacing the open() and codecs.open() functions for reading and writing text files.Read the article
-
Are there any (somewhat) advanced mathematics Javascript libraries?
- by pr1001
Are there any libraries knocking around that provide any additional general purpose math functions for Javascript? Say things like sums over a range, derivatives, integrals, etc. I can imagine that many things aren't possible, so even libraries that do rough approximations would be interesting. Thanks!Read the article
-
Using recursion to sum two numbers (python)
- by James
I need to write a recursive function that can add two numbers (x, y), assuming y is not negative. I need to do it using two functions which return x-1 and x+1, and I can't use + or - anywhere in the code. I have no idea how to start, any hints?Read the article
-
tsql source control using msscci
- by rod
Hi All, I have the TFS MSSCCI installed, now what? How do I use it to put say like a stored procedure under source control? Thanks, rodcharRead the article
-
This is a valid C code but not a valid C++ code?
- by claws
In some library I'm using (written in C) its StorePGM(image, width, height, filename) char *image; int width, height; char *filename; { // something something } All functions are defined this way. I never seen such function definitions in my life. They seem to be valid to MSVC but when I compile it as C++ it gives errors. What is it? some kind of old version C?Read the article
-
Encrypt hashed passwords?
- by Industrial
Hi everyone, Is it common sense to encrypt hashed&salted passwords that are stored in a database with a strong encryption (AES 192 or so) or are we just aiming for the stars? Of course, the encryption key will not be in the database itself, but will be kept at a safe place. Thanks a lot!Read the article
-
Query to check the consistency of records
- by orunner
I have four tables TableA: id1 id2 id3 value TableB: id1 desc TableC: id2 desc TableD: id3 desc What I need to do is to check if all combinations of id1 id2 id3 from table B C and D exist in the TableA. In other words, table A should contain all possible combinations of id1 id2 and id3 which are stored in the other three tables.Read the article
-
What runs before main()?
- by MikimotoH
After testing on msvc8, I found: Parse GetCommandLine() to argc and argv Standard C Library initialization C++ Constructor of global variables These three things are called before entering main(). My questions are: Will this execution order be different when I porting my program to different compiler (gcc or armcc), or different platform? What stuff does Standard C Library initialization do? So far I know setlocale() is a must. Is it safe to call standard C functions inside C++ constructor of global variables?Read the article
-
MySQL and PHP counting the minutes and hours from registration date?
- by FLIP
How do I count the minutes and hours since a member registered from there registration date that is stored in my MySQL database as datetime using PHP & MySQL. Here is what I have so far. date('F j, Y g:i:s A', strtotime($row['rdate']))Read the article
