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Android - Set fragment id
... can set inside the FragmentTransaction which can be used to uniquely identify a Fragment.
As Aleksey pointed out, you can pass an ID to FragmentTransaction's add(int, Fragment) method. However, this does not specify the ID for a Fragment. It specifies the ID of a ViewGroup to insert the Fragment i...
How do I use Assert to verify that an exception has been thrown?
...recommend using it since it is not flexible enough. Consider what happens if the exception type is thrown by your test setup code: test passes, but didn't actually do what you expected. Or what if you want to test the state of the exception object. I usually want to use StringAssert.Contains(e.Mes...
How to send cookies in a post request with the Python Requests library?
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@ThiefMaster: Normally, cookies live in browsers. If this answer doesn't have to do with browsers, what does it have to do with?
– Chris Nielsen
Oct 30 '17 at 19:30
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How do I create an array of strings in C?
I am trying to create an array of strings in C. If I use this code:
14 Answers
14
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Does MySQL ignore null values on unique constraints?
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this little feature has been very difficult to find an answer to that does not require adding a new column to the database or upgrading MySQL on a very old application. I was really looking for a solution like Postgres where I can use COALESCE but it seems the...
How does python numpy.where() work?
..., True, True]], dtype=bool)
This is the same reason why something like if x > 5: raises a ValueError if x is a numpy array. It's an array of True/False values, not a single value.
Furthermore, numpy arrays can be indexed by boolean arrays. E.g. x[x>5] yields [6 7 8], in this case.
Hones...
scanf() leaves the new line char in the buffer
...left in the input stream, not even to the end of a line, so beware of that if also using getchar() or fgets() on the same input stream. We're just getting scanf to skip over whitespace before conversions, like it does for %d and other non-character conversions.
Note that non-whitespace "directiv...
Increase number of axis ticks
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You can override ggplots default scales by modifying scale_x_continuous and/or scale_y_continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales c...
How to uncommit my last commit in Git [duplicate]
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If you aren't totally sure what you mean by "uncommit" and don't know if you want to use git reset, please see "Revert to a previous Git commit".
If you're trying to understand git reset better, please see "Can you explain w...
Add an element to an array in Swift
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As of Swift 3 / 4 / 5, this is done as follows.
To add a new element to the end of an Array.
anArray.append("This String")
To append a different Array to the end of your Array.
anArray += ["Moar", "Strings"]
anArray.append(conte...