大约有 40,000 项符合查询结果（耗时：0.0483秒） [XML]
Custom circle button
...a09ad"/>
</shape>
</item>
</ripple>
And set it as background of Button in xml like this:
<Button
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/round_button"
android:gravity="center_vertical|center_horizontal"
android:tex...
Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
...e Answer². The primary key was my problem, solved with the GeneratedValue setting a sequence for postgresql.
– Rodrigo Ferrari
May 8 '12 at 12:59
2
...
How do I force make/GCC to show me the commands?
... another option. Sample Makefile:
a:
@echo a
Output:
+ echo a
a
This sets the special SHELL variable for make, and -x tells sh to print the expanded line before executing it.
One advantage over -n is that is actually runs the commands. I have found that for some projects (e.g. Linux kernel) th...
How to shorten my conditional statements
...
//do something
}
http://jsperf.com/if-statements-test-techsin
(Top set: Chrome, bottom set: Firefox)
Conclusion :
If possibilities are few and you know that certain ones are more likely to occur than you get maximum performance out if || ,switch fall through , and if(obj[keyval]).
If poss...
submitting a GET form with query string params and hidden params disappear
...takes the value of action, appends a `?' to it, then appends the form data set, encoded using the "application/x-www-form-urlencoded" content type.
Maybe one could percent-encode the action-URL to embed the question mark and the parameters, and then cross one's fingers to hope all browsers would le...
What is the coolest thing you can do in
...an do in a few lines of simple code. I'm sure you can write a Mandelbrot set in Haskell in 15 lines but it's difficult to follow.
...
How to generate UML diagrams (especially sequence diagrams) from Java code?
... -> Discover UML model from KDM code again you'll get a property dialog set the serialization prop to TRUE to generate a file named MyProject.uml
Move generated MyProject.uml which was generated at root, to UML folder, Eclipse will ask you If you wanted to replace it click yes. What we did in h...
Pandas - How to flatten a hierarchical index in columns
...
I think the easiest way to do this would be to set the columns to the top level:
df.columns = df.columns.get_level_values(0)
Note: if the to level has a name you can also access it by this, rather than 0.
.
If you want to combine/join your MultiIndex into one Index (...
Only get hash value using md5sum (without filename)
...
One way:
set -- $(md5sum $file)
md5=$1
Another way:
md5=$(md5sum $file | while read sum file; do echo $sum; done)
Another way:
md5=$(set -- $(md5sum $file); echo $1)
(Do not try that with back-ticks unless you're very brave an...
Array to String PHP?
...ructure is good, duh), any answer that starts with "No, you don't want..." sets off bells in my head. You do not have the full context of the asker's question, and believe it or not, they might just have an excellent reason to denormalize this particular data and store it in a single field. No, you ...