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Reasons that the passed Intent would be NULL in onStartCommand
Is there any other reason that the Intent that is passed to onStartCommand(Intent, int, int) would be NULL besides the system restarting the service via a flag such as START_STICKY ?
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@Html.HiddenFor does not work on Lists in ASP.NET MVC
... come across this issue and solved it simply by doing the following:
@for(int i = 0; i < Model.ToGroups.Length; i++)
{
@Html.HiddenFor(model => Model.ToGroups[i])
}
By using a for instead of a foreach the model binding will work correctly and pick up all of your hidden values in the lis...
What is the best way to clone/deep copy a .NET generic Dictionary?
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Dictionary<string, int> dictionary = new Dictionary<string, int>();
Dictionary<string, int> copy = new Dictionary<string, int>(dictionary);
share...
Possible Loss of Fraction
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When you divide two int's into a floating point value the fraction portion is lost. If you cast one of the items to a float, you won't get this error.
So for example turn 10 into a 10.0
double returnValue = (myObject.Value / 10.0);
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Multi-gradient shapes
...new ShapeDrawable.ShaderFactory() {
@Override
public Shader resize(int width, int height) {
LinearGradient lg = new LinearGradient(0, 0, width, height,
new int[]{Color.GREEN, Color.GREEN, Color.WHITE, Color.WHITE},
new float[]{0,0.5f,.55f,1}, Shader.TileMode.R...
Can git automatically switch between spaces and tabs?
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That way:
each time you checkout some files of your repo, spaces can be converted in tabs,
but when you check-in (and push and publish), those same files are stored back using only spaces.
You can declare this filter driver (named here 'tabspace') in the .git/info/attributes (for a filter appl...
Benefits of using the conditional ?: (ternary) operator
...er the if/else equivalent without sacrificing readability.
Good example:
int result = Check() ? 1 : 0;
Bad example:
int result = FirstCheck() ? 1 : SecondCheck() ? 1 : ThirdCheck() ? 1 : 0;
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what is “strict mode” and how is it used?
...alue is not coerced to an object. A this value of null or undefined is not converted to the global object and primitive values are not converted to wrapper objects. The this value passed via a function call (including calls made using Function.prototype.apply and Function.prototype.call) do not coer...
Obtaining a powerset of a set in Java
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return sets;
}
And a test, given your example input:
Set<Integer> mySet = new HashSet<Integer>();
mySet.add(1);
mySet.add(2);
mySet.add(3);
for (Set<Integer> s : SetUtils.powerSet(mySet)) {
System.out.println(s);
}
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Reason to Pass a Pointer by Reference in C++?
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You would want to pass a pointer by reference if you have a need to modify the pointer rather than the object that the pointer is pointing to.
This is similar to why double pointers are used; using a reference to a pointer is slightly safer than using...