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What causes javac to issue the “uses unchecked or unsafe operations” warning
...t type of objects you're storing in the collection. So, instead of
List myList = new ArrayList();
use
List<String> myList = new ArrayList<String>();
In Java 7 you can shorten generic instantiation by using Type Inference.
List<String> myList = new ArrayList<>();
...
How do I update an entity using spring-data-jpa?
... new entity .. I even tried making a custom service and using "merge" with my EntityManager and it still won't work. It will always post a new entity.
– DtechNet
Aug 15 '15 at 2:27
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How to apply a function to two columns of Pandas dataframe
...
Added an example to my answer, hope this does what you're looking for. If not, please provide a more specific example function since sum is solved successfully by any of the methods suggested so far.
– Aman
...
How many characters can a Java String have?
...
@ChssPly76: Yes, that's correct. I edited my answer, thank you.
– Bill the Lizard
Jul 24 '09 at 20:31
2
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How do I escape ampersands in XML so they are rendered as entities in HTML?
... This is the answer for me. Adding &#038; in the Location of my Response Header fixed it and is not showing the Ampersand on the Response Header. :D
– iamjoshua
Aug 2 '19 at 5:24
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A beginner's guide to SQL database design [closed]
...
These are questions which, in my opionion, requires different knowledge from different domains.
You just can't know in advance "which" tables to build, you have to know the problem you have to solve and design the schema accordingly;
This is a mix of da...
How do I start PowerShell from Windows Explorer?
...as you have an "Open command window here" context menu.
Here is a copy of my OpenPowerShellHere.reg file, which puts the command in the context menu of each of the Explorer objects, the window background, the folder, and the drive icon:
Windows Registry Editor Version 5.00
;
; Add context menu en...
How to remove an element from a list by index
... position element in a list, like the 2th, 3th and 7th. you can't use
del my_list[2]
del my_list[3]
del my_list[7]
Since after you delete the second element, the third element you delete actually is the fourth element in the original list. You can filter the 2th, 3th and 7th element in the origin...
Increase font size chrome console
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Fantastic for when I've lost my glasses :P
– StackExchange What The Heck
Sep 18 '13 at 16:07
3
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How do I get the path of the current executed file in Python?
...e(unicode(__file__, encoding))
some_path/main.py:
import module_locator
my_path = module_locator.module_path()
If you have several main scripts in different directories, you may need more than one copy of module_locator.
Of course, if your main script is loaded by some other tool that doesn't ...