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How do I replace NA values with zeros in an R dataframe?
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I already tried this code yesterday before you post it and not worked. Because this I posted the question. But I tried know and worked perfectly. I think I was doing something wrong.
– Renato Dinhani
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best practice to generate random token for forgot password
I want to generate identifier for forgot password . I read i can do it by using timestamp with mt_rand(), but some people are saying that time stamp might not be unique every time. So i am bit of confused here. Can i do it with using time stamp with this ?
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What makes a keychain item unique (in iOS)?
...ate or kSecClassKey the Keychain checks also if the entry (the value) is already stored. This prevents from adding the same certificate or key twice. Also if you specify a different kSecAttrApplicationTag for a key (which must be unique, regarding the post above) it'll fail.
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Service vs IntentService in the Android platform
... shouldn't be too long. If you need to perform long tasks, you must use threads within Service.
The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. Another case of use is when call...
JSF backing bean structure (best practices)
...n yourself to redevelop/expand this code into something bigger, when you already have a nice bean with good structure.
Having 1 big bean, to do it all, will make it more memory dependant if/when you have to do declarations like this MyBigBean bigBean = new MyBigBean(); instead of using the funksjona...
CFBundleVersion in the Info.plist Upload Error
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@Adam: As I've read the CFBundleShortVersionString and the version number you provided in iTunes Connect should match. That means that if you show your version number in the app you use CFBundleShortVersionString. The CFBundleVersion should...
What is two way binding?
I have read lots that Backbone doesn't do two way binding but I don't exactly understand this concept.
5 Answers
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Naming conventions: “State” versus “Status” [closed]
...n 2009? This answer makes the most sense in technical jargon (cpu state, thread state, state machine; return status, raid volume status, etc.), and even much of everything else (application status, account status, etc.). The only thing I can think of that is inconsistent is stuff like "state of affa...
Find a value anywhere in a database
...n such search only once then you can probably go with any of the scripts already shown in other answers. But otherwise, I’d recommend using ApexSQL Search for this. It’s a free SSMS addin and it really saved me a lot of time.
Before running any of the scripts you should customize it based on th...
Curious null-coalescing operator custom implicit conversion behaviour
...?) null
But the optimizer can step in and say "whoa, wait a minute, we already checked that temp is not null; there's no need to check it for null a second time just because we are calling a lifted conversion operator". We'd them optimize it away to just
new int?(op_Implicit(temp2.Value))
My ...