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Is there a way to iterate over a dictionary?
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Yes, NSDictionary supports fast enumeration. With Objective-C 2.0, you can do this:
// To print out all key-value pairs in the NSDictionary myDict
for(id key in myDict)
NSLog(@"key=%@ value=%@", key, [myDict objectForKey:key]);
The alternate method (which you have to use if you're ...
Does uninstalling a package with “pip” also remove the dependent packages?
...ze # all the packages here are dependencies of specloud package
figleaf==0.6.1
nose==1.1.2
pinocchio==0.3
specloud==0.4.5
$ pip uninstall specloud
$ pip freeze
figleaf==0.6.1
nose==1.1.2
pinocchio==0.3
As you can see those packages are dependencies from specloud and they're still there, but no...
micro:bit 实验02 - 按 A/B 键让屏幕上的小球跑起来 · App Inventor 2 中文网
...索 micro:bit 实验02 - 按 A/B 键让屏幕上的小球跑起来
实验02：按 A/B 键让小球跑起来
这个实验做完你会得到什么
一、器材清单
二、在实验01...
std::function vs template
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answered Feb 3 '13 at 22:50
Andy ProwlAndy Prowl
111k1818 gold badges348348 silver badges430430 bronze badges
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Sort Dictionary by keys
...ys and values, like this:
let sortedKeysAndValues = sorted(dictionary) { $0.0 < $1.0 }
println(sortedKeysAndValues) // [(A, [1, 2]), (D, [5, 6]), (Z, [3, 4])]
EDIT2: The monthly changing Swift syntax currently prefers
let sortedKeys = Array(dictionary.keys).sort(<) // ["A", "D", "Z"]
The...
Sort array of objects by string property value
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4103
It's easy enough to write your own comparison function:
function compare( a, b ) {
if ( a.la...
解决：Run-Time Check Failure #0，The value of ESP was not properly sav...
解决：Run-Time Check Failure #0，The value of ESP was not properly saved调用DLL函数，出现错误Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. ...调用DLL函数，出现错误
Run-Time Check Failure #0 - The value of ESP was not properly saved...
How to use FormData for AJAX file upload?
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480
For correct form data usage you need to do 2 steps.
Preparations
You can give your whole form...
Regexp Java for password validation
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Try this:
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=])(?=\S+$).{8,}$
Explanation:
^ # start-of-string
(?=.*[0-9]) # a digit must occur at least once
(?=.*[a-z]) # a lower case letter must occur at leas...
Blocks on Swift (animateWithDuration:animations:completion:)
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202
the completion parameter in animateWithDuration takes a block which takes one boolean parameter...