大约有 30,000 项符合查询结果（耗时：0.0401秒） [XML]
Spring @Transactional - isolation, propagation
...umber of rows read by T1 is different from rows on table A1.
Scenario 1 is called Dirty reads.
Scenario 2 is called Non-repeatable reads.
Scenario 3 is called Phantom reads.
So, isolation level is the extend to which Scenario 1, Scenario 2, Scenario 3 can be prevented.
You can obtain complete isolat...
How do I enable standard copy paste for a TextView in Android?
...
Try android:textIsSelectable.
i.e., android:textIsSelectable="true"
share
|
improve this answer
|
follow
...
How to pass command line arguments to a rake task
...
Unfortuanely, zsh can not parse the call correctly, you need type the command on zsh like this: rake thing:work\[1,2,3\], or this rake 'thing:work[1,2,3]'
– hutusi
Jul 27 '17 at 6:51
...
Get exception description and stack trace which caused an exception, all as a string
...
See the traceback module, specifically the format_exc() function. Here.
import traceback
try:
raise ValueError
except ValueError:
tb = traceback.format_exc()
else:
tb = "No error"
finally:
print tb
...
When to use a View instead of a Table?
...hen refactoring databases.
Views are not acceptable when you use views to call views which can result in horrible performance (at least in SQL Server). We almost lost a multimillion dollar client because someone chose to abstract the database that way and performance was horrendous and timeouts fre...
How to prevent line-break in a column of a table cell (not a single cell)?
...answered Dec 12 '09 at 15:31
David MDavid M
67.2k1111 gold badges148148 silver badges180180 bronze badges
...
Get list of a class' instance methods
...gt; ["method1"]
TestClass.methods.grep(/new/) # => ["new"]
Or you can call methods (not instance_methods) on the object:
test_object = TestClass.new
test_object.methods.grep(/method1/) # => ["method1"]
share
...
I keep getting “Uncaught SyntaxError: Unexpected token o”
... guess about the datatype. It does the JSON parsing even though you're not calling getJSON()-- then when you try to call JSON.parse() on an object, you're getting the error.
Further explanation can be found in Aditya Mittal's answer.
...
Empty arrays seem to equal true and false at the same time
...
You're testing different things here.
if (arr) called on object (Array is instance of Object in JS) will check if the object is present, and returns true/false.
When you call if (arr == false) you compare values of this object and the primitive false value. Internally, ...
How do I get the path and name of the file that is currently executing?
I have scripts calling other script files but I need to get the filepath of the file that is currently running within the process.
...