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What are the various “Build action” settings in Visual Studio project properties and what do they do
...plorer. There are a number of options and it's difficult to know what each one of them will do.
7 Answers
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Bidirectional 1 to 1 Dictionary in C#
...neric, bidirectional 1 to 1 Dictionary class in C# (2), ie. a BiDictionaryOneToOne<T, S> which is guaranteed to only contain one of each value and key (up to RefEquals anyway), and which can be searched using either key or value. Anyone know of one, or should I just implement it myself? I ca...
Understanding slice notation
...s than you ask for. For example, if you ask for a[:-2] and a only contains one element, you get an empty list instead of an error. Sometimes you would prefer the error, so you have to be aware that this may happen.
Relation to slice() object
The slicing operator [] is actually being used in the ab...
Rails: how do I validate that something is a boolean?
...t of values, with the side-effect to test for the field's presence (unless one of those values is nil of course).
– Martin Carel
Jul 14 '15 at 19:38
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Tri-state Check box in HTML?
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The indeterminate state cannot be set in the HTML markup, it can only be done via Javascript (see this JSfiddle test and this detailed article in CSS tricks)
This state doesn't change the value of the checkbox, it is only a visual cue that masks the input's real state.
Browser test: Worked for me i...
Activity has leaked window that was originally added
...o show a Dialog after you've exited an Activity.
[EDIT]
This question is one of the top search on google for android developer,
therefore Adding few important points from comments, which might be more helpful for future investigator without going in depth of comment conversation.
Answer 1 :
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How do I make a textbox that only accepts numbers?
...xtbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with...
Java Embedded Databases Comparison [closed]
...ried to look at some of the available products , but I can't decide which one would be more suitable for me. H2 , HSQLDB , Derby and Berkeley DB seem to be good candidates, but I still don't see how they compare to each other. I appreciate your help comparing them and helping me decide which ...
Why not use java.util.logging?
... logback projects.
There are objective reasons for preferring SLF4J. For one, SLF4J allows the end-user the liberty to choose the underlying logging framework. In addition, savvier users tend to prefer logback which offers capabilities beyond log4j, with j.u.l falling way behind. Feature-wise j.u....
How to validate date with format “mm/dd/yyyy” in JavaScript?
...gex to this: /^(\d{2}|\d{1})\/(\d{2}|\d{1})\/\d{4}$/ this way it catches one digit month and day 1/5/2014. Thanks for the sample!
– Mitch Labrador
Apr 28 '14 at 10:48
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