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favicon.png vs favicon.ico - why should I use PNG instead of ICO?
Other than the fact that PNG is a more common image format, is there any technical reason to favor favicon.png vs. favicon.ico?
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What does void* mean and how to use it?
...w something like void *func(void* i); , what does this void* mean here for the function name and for the variable type, respectively?
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python multithreading wait till all threads finished
...all to join blocks until thread finishes execution. You will have to wait for all of the threads anyway. If t1 finishes first you will start waiting on t2 (which might be finished already and you will immediately proceed to wait for t3). If t1 took the longest to execute, when you return from it bot...
What are best practices for validating email addresses on iOS 2.0
...in great detail that the grammar specified in RFC 5322 is too complicated for primitive regular expressions.
I recommend a real parser approach like MKEmailAddress.
As quick regular expressions solution see this modification of DHValidation:
- (BOOL) validateEmail: (NSString *) candidate {
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variable === undefined vs. typeof variable === “undefined”
The jQuery Core Style Guidelines suggest two different ways to check whether a variable is defined.
8 Answers
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PHP abstract properties
...only declare properties because they are containers of data reserved in memory on initialization.
A function on the other hand can be declared (types, name, parameters) without being defined (function body missing) and thus, can be made abstract.
"Abstract" only indicates that something was decla...
C++ wait for user input [duplicate]
What would be the best way to wait for user input in console application?
4 Answers
4
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How to round a number to significant figures in Python
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Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
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>>> round_to_1(0.0232)
0.02
>>> round_to_1(1234243)
1000000.0
>>> round_to_1(13)
10.0
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Passing data between controllers in Angular JS?
...ers to see some examples.
You could define your product service (as a factory) as such:
app.factory('productService', function() {
var productList = [];
var addProduct = function(newObj) {
productList.push(newObj);
};
var getProducts = function(){
return productList;
};
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Ruby, remove last N characters from a string?
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Ruby 2.5+
As of Ruby 2.5 you can use delete_suffix or delete_suffix! to achieve this in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.del...