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java.net.ConnectException: Connection refused
...d a lot more information to be able to help you. (For one thing, we don't know what firewall you have...)
– Jon Skeet
Jan 19 '18 at 14:58
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Altering a column: null to not null
...semantics of NULL can have a few meanings. One of the common meaning is UNKNOWN. Take SCORE as an example. A null SCORE and a ZERO SCORE is a world of difference! Before you did the above recommendations. Make sure you application does not take null in its business logic.
– Tec...
Add Foreign Key to existing table
...d an index to it..
ALTER TABLE users ADD INDEX index_name (index_column)
Now add the constraint
ALTER TABLE foreign_key_table
ADD CONSTRAINT foreign_key_name FOREIGN KEY (foreign_key_column)
REFERENCES primary_key_table (primary_key_column) ON DELETE NO ACTION
ON UPDATE CASCADE;
Note if you d...
Best way to assert for numpy.array equality?
...iable.
update
A few versions ago numpy obtained assert_allclose which is now my favorite since it allows us to specify both absolute and relative error and doesn't require decimal rounding as the closeness criterion.
share...
Trigger a Travis-CI rebuild without pushing a commit?
... project, and it errored for reasons unrelated to your PR per se, and you know it would succeed if you could just nudge it to try again. It's understandable why you can't (not your project) -- but also understandable why you'd want to (your PR incorrectly "looks bad").
– Greg H...
'innerText' works in IE, but not in Firefox
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textContent is now supported in IE9+, but Firefox still doesn't support innerText (although they did add IE-introduced outerHTML just few days ago).
– kangax
Nov 17 '11 at 22:20
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Removing duplicate rows in Notepad++
...ers, but this is the same thing.
The check boxes and buttons required will now appear in the menu under: TextFX -> TextFX Tools.
Make sure "sort outputs only unique..." is checked. Next, select a block of text (Ctrl+A to select the entire document). Finally, click "sort lines case sensitive" or "...
foreach with index [duplicate]
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This can now get a bit shorter when using a C# 7 ValueTuple: foreach (var (x, i) in someCollection.Select((x, i) => (x, i)) ) { ... }
– FernAndr
Sep 17 '19 at 12:20
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Android: Rotate image in imageview by an angle
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I know this is insanely late, but it was helpful for me so it may help others.
As of API 11, you can set the absolute rotation of an ImageView programmatically by using the imageView.setRotation(angleInDegrees); method.
By a...
Check if item is in an array / list
...(lambda x : x == 5, nums)) > 0)
This solution is more robust. You can now check whether any number satisfying a certain condition is in your array nums.
For example, check whether any number that is greater than or equal to 5 exists in nums:
(len(filter (lambda x : x >= 5, nums)) > 0)
...