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SQL Server database backup restore on lower version
... the backup you have on a SQL Server 2008 R2 instance, export all the data and import it on a SQL Server 2008 database.
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Python: Check if one dictionary is a subset of another larger dictionary
...to write a custom filter method that takes an arbitrary number of kwargs and returns a list containing the elements of a database-like list that contain those kwargs .
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iReport not starting using JRE 8
I have downloaded and installed the iReport 4.5 using te Windows installer. But when I try to start the iReport it shows the splash screen but does not start.
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curl: (60) SSL certificate problem: unable to get local issuer certificate
...mportant to note that this applies to the system sending the CURL request, and NOT the server receiving the request.
Download the latest cacert.pem from https://curl.haxx.se/ca/cacert.pem
Add the following line to php.ini: (if this is shared hosting and you don't have access to php.ini then you c...
HashMap to return default value for non-found keys?
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[Update]
As noted by other answers and commenters, as of Java 8 you can simply call Map#getOrDefault(...).
[Original]
There's no Map implementation that does this exactly but it would be trivial to implement your own by extending HashMap:
public class Defau...
Direct vs. Delegated - jQuery .on()
I am trying to understand this particular difference between the direct and delegated event handlers using the jQuery .on() method . Specifically, the last sentence in this paragraph:
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File I/O in Every Programming Language [closed]
...the file.
Therefore, the invokation of readlines() results in reading each and every line of the file.
In that particular case it's fine to use readlines() because we have to read the entire file anyway (we want its last line).
But if our file contains many lines and we just want to print its nth li...
Git Push error: refusing to update checked out branch
... have solved some merge conflicts, committed then tried to Push my changes and received the following error:
11 Answers
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Difference between final and effectively final
I'm playing with lambdas in Java 8 and I came across warning local variables referenced from a lambda expression must be final or effectively final . I know that when I use variables inside anonymous class they must be final in outer class, but still - what is the difference between final and ef...
When to use wrapper class and primitive type
...have mentioned that certain constructs such as Collections require objects and that objects have more overhead than their primitive counterparts (memory & boxing).
Another consideration is:
It can be handy to initialize Objects to null or send null parameters into a method/constructor to indic...