function

How to hack an image height standard with jQuery?

I need a jQuery function to measure the height of an image, and add margin to the IMG element, so it will always result with a regular number that divides by 17 (which is my line-height). Any help would be appreciated. Thanks. UPDATE: I changed the title of the question and replaced PHP with jQuery. Coming to think about it, I need the...

Javascript: Re-assigning a function with another function

Let's say I have these two functions: function fnChanger(fn) { fn = function() { sys.print('Changed!'); } } function foo() { sys.print('Unchanged'); } Now, if I call foo(), I see Unchanged, as expected. However, if I call fnChanger first, I still see Unchanged: fnChanger(foo); foo(); //Unchanged Now, I assume this is becaus...

Question on reuse of pointers after passing to functions

So, when I pass a const char * to a function once, can I use it again? It appears to end up spitting out crap to me. const char *config_file = "file.txt"; function(int x, config_file); cout << "Number" << x; secondfunction(int y, config_file); Do I need to make another pointer to config_file? If so, how do I do that? Thanks! ...

python, functions combination via names and chain them to invoke in-a-go?

All, I have confuse below may need your help suppose I have a row based variable length data matrix 93 77 96 85 50 69 54 16 39 91 59 38 64 30 18 50 43 9 74 94 44 87 95 89 ... I want to generate result data via above source with different generating algorithms while the different range selection algorithms, take ...

dealing with random numbers in php?

i want a little php function to choose a number between 0 to 5, with 50% percent chance that it will be zero, and also choose between two strings at the same time randomly: the algorithm: choose number between 0,1,2,3,4,5 randomly (50% chance for zero, 50% chance for 1,2,3,4,5) and choose string blue, yellow randomly return(number, ...

python function list chained executing?

Hi, In python I defined functions: def foo_1(p): return p + 1 def foo_2(p): return p + 1 def foo_3(p): return p + 1 def foo_4(p): return p + 1 def foo_5(p): return p + 1 I need execute those function as a chain may like this: foo_1(foo_2(foo_3(foo_4(foo_5(1))))) May I know if I can push the functions into a list then execute those...

printf as argument of function

Usually usage of function: my_func("test"); Whether I can use this parameter so? my_func(printf("current_count_%d",ad_id)); int my_func(const char *key) ...

dynamic define the function name and function body with variables in python?

All, I have below functions def foo_001(para): tmp = para + 2 return tmp def foo_002(para): tmp = para * 2 return tmp def foo_003(para): tmp = para / 2 return tmp def foo_004(para): tmp = para - 2 return tmp those functions only have different in function names while the algorithm line e.g. "tmp = p...

C++ Function Conventions?

Just had a 'Fundamentals of Programming' lecture at uni and was told that the convention for using/declaring functions is to have the main() function at the top of the program, with functions/procedures below it and to use forward declarations to prevent compiler errors. However, I've always done it the other way - functions at top main...

PHP's range function in Java

PHP's range function work like this in php : $leap_years = range(1900, 2000, 4); creates array like 1900, 1904, 1908, ... Is there something simple like this in Java? ...

jquery variables, the difference between with and without $ prefix

Hi there, I have read another post/question regarding jquery variables and it was useful but I'm still having trouble understanding... Below is a bit of code from a simple tabbed content functionality that I'm modifying. Please could someone explain why this works: $tabMenuItem.click(function() { var activetab = $(this).find(...

Deleting empty spaces in a string

Okay I have a simple Javascript problem, and I hope some of you are eager to help me. I realize it's not very difficult but I've been working whole day and just can't get my head around it. Here it goes: I have a sentence in a Textfield form and I need to reprint the content of a sentence but WITHOUT spaces. For example: "My name is Sl...

Is it ok to skip "return None"?

I wonder if it is bad manner to skip return None, when it is not needed. Example: def foo1(x): if [some condition]: return Baz(x) else: return None def foo2(x): if [some condition]: return Baz(x) bar1 = foo1(x) bar2 = foo2(x) In both cases, when condition is false, function will return with None....

PHP Optional Parameters - specify parameter value by name?

Hey, I was just wondering... I know it is possible to use optional arguments as follows: function doSomething($do, $something = "something") { } doSomething("do"); doSomething("do", "nothing"); But suppose you have the following situation: function doSomething($do, $something = "something", $or = "or", $nothing = "nothing") { } ...

Is it okay to use table look up functionalities in scalar function?

In our case we have some business logic that looks into several tables in a certain order, so that the first non null value from one table is used. While the look up is not hard, but it does take several lines of SQL code to accomplish. I have read about scalar valued functions in SQL Server, but don't know if the re-compliation issue af...

what is difference to use or not to use parenths before function in javascript

What is difference between following code? Code 1: var f = function() { // function body code // ... // ... }(); Code 2: var f = (function(){ // function body code // ... // ... })(); Which one is better to use? ...

generate python function in runtime and invoke them with string name?

All, foo.py def foo_001(para): tmp = para + 2 return tmp def foo_002(para): tmp = para * 2 return tmp def foo_003(para): tmp = para / 2 return tmp ... def foo_100(para): tmp = #complex algo, return tmp main.py from foo import * fun_name = ["foo_001","foo_002","foo_002" ... "foo_100"] src = 1 rzt = [] for i in fun_name: ...

Library function returns raw pointer and I want to use smart pointer

I have this situation where the library I use has many functions that return raw pointers to objects, how could I now use boost smart pointers in my program using this library and using smart pointers? The library is xerces-C++ and an example is getting the document iterator: boost::shared_ptr<DOMNodeIterator> itera = document->createN...

Why does "variable = 1" not assign a variable in Python?

Why does Python complain about chrome being referenced before assignment? It does not complain about the dictionary. This is with Python 2.5 if it makes a difference. def f(): google['browser'] = 'chrome' chrome += 1 google = dict() chrome = 1 f() I can make it work with global chrome of course, but I'd like to know why Python do...

Getting the actual (absolute) execution time of the last query in PHP (excluding network latency etc)

I want to get the actual Mysql query execution times while they run in my project so running PHP microtime() before and after and subtracting won't work. When we run a query in command line, the result displays the timing information something like this:- xxx rows affected in YY sec How to get the same time information using PHP. I s...