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Just what is an IntPtr exactly?
...IntPtr type; every time it has needed to be used I have simply put null or IntPtr.Zero and found most functions to work. What exactly is it and when/why is it used?
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Error: CUICatalog: Invalid asset name supplied: (null), or invalid scale factor : 2.000000
... is trying to put nil in [UIImage imageNamed:]
Add symbolic breakpoint for [UIImage imageNamed:]
Add $arg3 == nil condition on Simulator, $r0 == nil condition on 32-bit iPhone, or $x2 == nil on 64-bit iPhone.
Run your application and see where debugger will stop.
P.S. Keep in mind this also ...
Change column type from string to float in Pandas
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You have four main options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric types (e.g. strings) to a suitable numeric type. (See also to_datetime() and to_timedelta().)
astype() - convert (almost) an...
Running shell command and capturing the output
... shell command and return its output as a string , no matter, is it an error or success message. I just want to get the same result that I would have gotten with the command line.
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
I'm working on getting my database to talk to my Java programs.
38 Answers
38
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When do items in HTML5 local storage expire?
For how long is data stored in localStorage (as part of DOM Storage in HTML5) available? Can I set an expiration time for the data which I put into local storage?
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Singleton pattern in nodejs - is it needed?
...has basically to do with nodejs caching. Plain and simple.
https://nodejs.org/api/modules.html#modules_caching
(v 6.3.1)
Caching
Modules are cached after the first time they are loaded. This means
(among other things) that every call to require('foo') will get
exactly the same object ...
What is the difference between a symbolic link and a hard link?
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Underneath the file system, files are represented by inodes. (Or is it multiple inodes? Not sure.)
A file in the file system is basically a link to an inode.
A hard link, then, just creates another file with a link to the same underlying inode.
When you delete a file, it removes one ...
Why is it impossible to build a compiler that can determine if a C++ function will change the value
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Why is it impossible to build such a compiler?
For the same reason that you can't write a program that will determine whether any given program will terminate. This is known as the halting problem, and it's one of those things that's not computable.
To be clear, you can w...
PHP script - detect whether running under linux or Windows?
I have a PHP script that may be placed on a windows system or a linux system. I need to run different commands in either case.
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