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What is the documents directory (NSDocumentDirectory)?
...ch with @"~/Documents". Hardcoding paths is never a good idea. It may work now, but if Apple ever chooses to rename or move the Documents directory, your app will break. NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); will always give you the correct directory!
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How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
...ibs. However, we add the source of 13.04 instead, so, there may be some unknown problem. After installing ia32-libs, I recommend you to remove the ia32-libs-raring.list in /etc/apt/sources.list.d, and do sudo apt-get update.
If you want to fix the dependency of Android SDK, you can try this bello...
pandas GroupBy columns with NaN (missing) values
... from pandas 1.1 you have better control over this behavior, NA values are now allowed in the grouper using dropna=False
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How do pointer to pointers work in C?
...characters, but also to other pointers. E.g.:
const char **cp = &c;
Now cp points to c, that is, it contains the address of c (which is 58). We can go even further. Consider:
const char ***cpp = &cp;
Now cpp stores the address of cp. So it has value 55 (based on the example above), and...
Google Chrome redirecting localhost to https
... very bottom of a page is QUERY domain textbox - verify that localhost is known to the browser. If it says "Not found" then this is not the answer you are looking for.
If it is, DELETE the localhost domain using the textbox above
Your site should now work using plain old HTTP
This is not a permane...
How do I represent a time only value in .NET?
...e time to the user, output it formatted to the user like this:
DateTime.Now.ToString("t"); // outputs 10:00 PM
It seems like all the extra work of making a new class or even using a TimeSpan is unnecessary.
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Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
...135 | 1135 | 1200 | 4357 | 1137 | 1188 | 4294 |
Findings
Nowadays, all evergreen browsers handle string concatenation well. Array.join only helps IE 11
Overall, Opera is fastest, 4 times as fast as Array.join
Firefox is second and Array.join is only slightly slower in FF but consi...
How to convert IPython notebooks to PDF and HTML?
...eX (.pdf). Otherwise follow these two steps.
For HTML output, you should now use Jupyter in place of IPython and select File -> Download as -> HTML (.html) or run the following command:
jupyter nbconvert --to html notebook.ipynb
This will convert the Jupyter document file notebook.ipyn...
Advantages of using prototype, vs defining methods straight in the constructor? [duplicate]
...rer :) I didn't realize the efficiency difference - that's very useful to know. Same for the hoisting effect - tricky, indeed. Thanks for such a great answer, I learned a lot from it!
– Leo
Dec 22 '10 at 11:09
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Can I find out the return value before returning while debugging in Eclipse?
... it:
step over the return statement (using "Step Over" or "Step Return")
now the first line in the variable view will show the result of the return statement, as "[statement xxx] returned: "
See Eclipse Project Oxygen (4.7) M2 - New and Noteworthy for details.
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