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Length of an integer in Python
...ere are some benchmarks. The len(str()) is already behind for even quite small numbers
timeit math.log10(2**8)
1000000 loops, best of 3: 746 ns per loop
timeit len(str(2**8))
1000000 loops, best of 3: 1.1 µs per loop
timeit math.log10(2**100)
1000000 loops, best of 3: 775 ns per loop
timeit len...
How to use subprocess popen Python
...value, to be filled by untrusted user supplied data. But I am prepared to call a truce on that item. My point was more that there is no reason not to use shell=True except when using untrusted input. Simply stating that shell=True is not recommended is misleading.
– Hans Then
...
What do you call the -> operator in Ruby?
..."Methods, Procs, Lambdas, and Closures"), a lambda defined using -> is called lambda literal.
succ = ->(x){ x+1 }
succ.call(2)
The code is equivalent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal....
Show hidden div on ng-click within ng-repeat
...s" ng-class="{ 'hidden': ! showDetails }">
I like this more, since it allows you to do some nice transitions: http://jsfiddle.net/asmKj/1/
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What's the best way to bundle static resources in a Go program? [closed]
I'm working on a small web application in Go that's meant to be used as a tool on a developer's machine to help debug their applications/web services. The interface to the program is a web page which includes not only the HTML, but some JavaScript (for functionality), images and CSS (for styling). I...
What does iterator->second mean?
...h of X objects, right? But if you have a std::map<X, Y>, what it actually stores is a whole bunch of std::pair<const X, Y>s. That's exactly what a map is - it pairs together the keys and the associated values.
When you iterate over a std::map, you're iterating over all of these std::pai...
Target elements with multiple classes, within one rule
...t;/div>
<div class="blue-border background">!</div>
would all get a blue border and white background applied to them.
However, the accepted answer is different.
.blue-border.background {
border: 1px solid #00f;
background: #fff;
}
This applies the styles to elements that...
Are there any naming convention guidelines for REST APIs? [closed]
...niel, you are right, thanks for pointing that out. However, de-facto we usually expect urls to ignore cases, especially the resource name part. It would make no sense for userid & UserId to behave differently (unless one of them returns 404)
– LiorH
Jun 5 ...
What is the difference between class and instance methods?
...hen be used like so:
[MyClass aClassMethod];
MyClass *object = [[MyClass alloc] init];
[object anInstanceMethod];
Some real world examples of class methods are the convenience methods on many Foundation classes like NSString's +stringWithFormat: or NSArray's +arrayWithArray:. An instance method...
How to make a Java class that implements one interface with two generic types?
...it: This is a flaw with Java. There's absolutely no reason we shouldn't be allowed to have multiple implementations of the same interface, provided that the implementations take different arguments.
– gromit190
May 8 '17 at 11:24
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