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What is the best way to test for an empty string in Go?
...one-liner is clear and concise. All I need to do is make the if condition < 1 +1
– Shadoninja
Nov 10 '17 at 18:00
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Get Android Phone Model programmatically
...er/AndroidDeviceNames
System.out.println(DeviceName.getDeviceName());
Result:
HTC6525LVW
HTC One (M8)
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Flask raises TemplateNotFound error even though template file exists
...mypackage/
__init__.py
templates/
home.html
Alternatively, if you named your templates folder something other than templates and don't want to rename it to the default, you can tell Flask to use that other directory.
app = Flask(__name__, template_folder='template') #...
Is there a simple way to remove multiple spaces in a string?
...ke newlines, carriage returns, tabs. Unless this is desired, to only do multiple spaces, I present these examples.
I used 11 paragraphs, 1000 words, 6665 bytes of Lorem Ipsum to get realistic time tests and used random-length extra spaces throughout:
original_string = ''.join(word + (' ' * random...
Remove all the children DOM elements in div
...urface(domNode, widthInPx, heightInPx);
domNode is usually an unadorned <div>, which is used as a placeholder for a surface.
You can clear everything on the surface in one go (all existing shape objects will be invalidated, don't use them after that):
surface.clear();
All surface-related...
Set type for function parameters?
...y, JavaScript provides the instanceof and typeof keywords to aid in this. Although this takes up more code, maybe it is on the developer for choosing JavaScript as the language for something that largely depends on types. As for huge nodejs backend applications? I think it should be common sense.
...
What do I have to do to get Core Data to automatically migrate models?
...ns that NSInferMappingModelAutomaticallyOption is undeclared, add #import <CoreData/CoreData.h> to your app delegate header file.
– Elise van Looij
Sep 29 '09 at 14:13
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What is tail recursion?
...csum(5), (which would effectively be tailrecsum(5, 0), because of the default second argument).
tailrecsum(5, 0)
tailrecsum(4, 5)
tailrecsum(3, 9)
tailrecsum(2, 12)
tailrecsum(1, 14)
tailrecsum(0, 15)
15
In the tail-recursive case, with each evaluation of the recursive call, the running_total is ...
How to randomly select rows in SQL?
...customerNames" which has two columns "Id" and "Name" and approx. 1,000 results.
11 Answers
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How to animate the change of image in an UIImageView?
... achieved using CoreAnimation. Sample example for this approach:
#import <QuartzCore/QuartzCore.h>
...
imageView.image = [UIImage imageNamed:(i % 2) ? @"3.jpg" : @"4.jpg"];
CATransition *transition = [CATransition animation];
transition.duration = 1.0f;
transition.timingFunction = [CAMediaTi...