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Should I use string.isEmpty() or “”.equals(string)?
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Thank you for the explanation. Now I know why to favor "".equals(str) over str.equals("")! I was always wondering why others use this so often, but didn't take null values into account. Great :-)
– Peter Wippermann
De...
Any reason not to use '+' to concatenate two strings?
...n, results in unnecessary function calls which could add to the overhead.
Now coming back to the question. Should one discourage the use of + over join in all cases?
I believe no, things should be taken into consideration
Length of the String in Question
No of Concatenation Operation.
And off-...
How do I get an apk file from an Android device?
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Hi, Thank u very much. I can get the images from sdcard now. but I want to pull the apk file from device (managementApplication folder). The iTwips apk is stored on the Application folder. Please assist me.
– Finder
Oct 27 '10 at 16:40
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What values should I use for CFBundleVersion and CFBundleShortVersionString?
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Similar to what Phil says above, nowadays, if you resubmit a failed (not approved by App Store) build, it looks like you need to bump the CFBundleVersion on each submission now, so likely these numbers will diverge unless you're always perfect, or you don't ...
How is null + true a string?
... fine, but it's not used for a null literal, because the compiler doesn't know to look in Foo. It only knows to consider string because it's a predefined operator explicitly listed in the spec. (In fact, it's not an operator defined by the string type... 1) That means that this will fail to compile:...
How do I enumerate through a JObject?
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Now how do I use it for nested JSON? For example, if the "value" contains another set of key:value pairs, how can I use the JToken value to iterate through next set of pairs?
– AlbatrossCafe
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I can’t find the Android keytool
...r your certificate's MD5 fingerprint. Wtf is that, you might say. I don't know, but just do what I say and your Android app doesn't get hurt.
Go to Start>Run and type cmd to open up a command prompt. You need to navigate to the directory with the keytool.exe file, which might be in a slightly di...
What parameters should I use in a Google Maps URL to go to a lat-lon?
...duce a url for Google Maps that goes to a specific latitude and longitude. Now, I generate a url such as this:
15 Answers
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Spring Boot - Cannot determine embedded database driver class for database type NONE
...taSourceAutoConfiguration.class}) in my main class. But after putting this now I am getting error Parameter 0 of constructor in org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration required a bean of type 'javax.sql.DataSource' that could not be found.. Please help.
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Difference between @import and link in CSS
...a 1000 page website and we link to a CSS file from every page on the site. Now let's imagine we want to add a second CSS file to all of those pages. We could edit all 1000 HTML files and add a second CSS link or a much better way would be to import the second CSS file from within the first file. We ...