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Replace Default Null Values Returned From Left Outer Join
...r example:
SELECT
t.id,
COALESCE(d.field, 'default')
FROM
test t
LEFT JOIN
detail d ON t.id = d.item
Also, you can use multiple columns to check their NULL by COALESCE function.
For example:
mysql> SELECT COALESCE(NULL, 1, NULL);
-> 1
mysql> SELECT COALESCE(...
Calling startActivity() from outside of an Activity?
...="standard".
Intent i = new Intent().setClass(mActivity.getApplication(), TestUserProfileScreenActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
// Launch the new activity and add the additional flags to the intent
mActivity.getApplication().startAc...
Use of “global” keyword in Python
... modify them you have to use the global keyword. For example:
foo = 1
def test():
foo = 2 # new local foo
def blub():
global foo
foo = 3 # changes the value of the global foo
In your case, you're just accessing the list sub.
...
With Mercurial, how can I “compress” a series of changesets into one before pushing?
...feature. I work on it, and when I think it's done, I commit the changeset. Testing it a bit more, I find that I could further improve this feature by tweaking something in the code. I make the change and commit. 20 minutes later, I find there's a bug in this new feature, so I fix it and commit that ...
Jenkins on OS X: xcodebuild gives Code Sign error
...s one build step that is "Execute Shell" in which I run commands I want to test as the jenkins user.
Once I had that set up, I could run the command
security list-keychains
And this revealed to me that the only thing that jenkins could see was the system keychain.
+ security list-keychains
"...
How can I print a circular structure in a JSON-like format?
...
I needed to copy an object to use for stub testing. This answer was perfect. I copied the object and then removed the override. Thanks!!
– Chris Sharp
Nov 6 '18 at 16:14
...
Can I use jQuery with Node.js?
...
@ThomasBlobaum looks like you haven't got the latest version of Express. Try npm install --save express in your command prompt.
– gilbert-v
May 31 '19 at 9:52
...
How would you compare jQuery objects?
...
Looping is not required, testing the single first node is not required. Pretty much nothing is required other than ensuring they are the same length and share identical nodes. Here is a small code snippet. You may even want to convert this into a ...
Fragment Inside Fragment
...isable swiping. So here is some code to improve my solution:
public class TestFragment extends Fragment{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.frag, container, false);
final ArrayList&...
How to calculate the angle between a line and the horizontal axis?
...i/2)) <= 0.01, "expecting angle to be pi/2, it is: " + str(angle)
All tests pass. See https://en.wikipedia.org/wiki/Unit_circle
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