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What __init__ and self do on Python?
...elf._y = y
The __init__ method gets called when memory for the object is allocated:
x = Point(1,2)
It is important to use the self parameter inside an object's method if you want to persist the value with the object. If, for instance, you implement the __init__ method like this:
class Point:
...
Building big, immutable objects without using constructors having long parameter lists
...ore instances than necessary - isn't really that much of a problem. Object allocation is very cheap, as is garbage collection of short-lived objects. When escape analysis is enabled by default, this kind of "intermediate objects" are likely to be stack allocated and cost literally nothing to create....
Function to return only alpha-numeric characters from string?
I'm looking for a php function that will take an input string and return a sanitized version of it by stripping away all special characters leaving only alpha-numeric.
...
Using generic std::function objects with member functions in one class
... in size, assigning this to an std::function will result in dynamic memory allocation.
On the other hand, a lambda that captures this is only one pointer in size, assigning it to an std::function will not result in dynamic memory allocation with g++.
While I have not verified this with other compi...
What are the advantages of Sublime Text over Notepad++ and vice-versa? [closed]
...e plugins in notepad++)
Some Variation: Some user find plugins useful for PHP coders on that
http://codelikeapoem.com/2013/01/goodbye-notepad-hellooooo-sublime-text.html
although, there are many plugins for Notepad Plus Plus ..
I am not sure of your requirements, nor I am promoter of either of t...
How can I get browser to prompt to save password?
... will offer to save the password.
<form id="loginform" action="login.php" onSubmit="return login(this);">
<input name="username" type="text" />
<input name="password" type="password" />
<input name="doLogin" type="submit" value="Login" />
</form>
Using this met...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...ring> definitions ) {
// Create a buffer sufficiently large that re-allocations are minimized.
final StringBuilder sb = new StringBuilder( text.length() << 1 );
final TrieBuilder builder = Trie.builder();
builder.onlyWholeWords();
builder.removeOverlaps();
final St...
UIView with rounded corners and drop shadow?
...ed corners in a view with the drop shadow.
UIView* roundedView = [[UIView alloc] initWithFrame: frame];
roundedView.layer.cornerRadius = 5.0;
roundedView.layer.masksToBounds = YES;
UIView* shadowView = [[UIView alloc] initWithFrame: frame];
shadowView.layer.shadowColor = [UIColor blackColor].CGCol...
Initialize a nested struct
...
You also could allocate using new and initialize all fields by hand
package main
type Configuration struct {
Val string
Proxy struct {
Address string
Port string
}
}
func main() {
c := new(Configurati...
How to prevent a jQuery Ajax request from caching in Internet Explorer?
...ks var ajaxfile = base+"index.php/msc/popup_view/"+obj+"/"+id+"/"+no_tab; $.ajax({type: "GET",url: ajaxfile, //contentType: "application/json; charset=utf-8", cache: false, success: function(msg){ $("#popup").html(msg); } });
...