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Just what is an IntPtr exactly?
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It's a "native (platform-specific) size integer." It's internally represented as void* but exposed as an integer. You can use it whenever you need to store an unmanaged pointer and don't want to use unsafe code. IntPtr.Zero is effectively NULL (a null pointer).
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Can't Find Theme.AppCompat.Light for New Android ActionBar Support
...;Android. In the section library "Add" and choose "AppCompat"
That is all!
Note: if you are using "android:showAsAction" in menu item, you need to change prefix android as in the example http://developer.android.com/guide/topics/ui/actionbar.html
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How to get the home directory in Python?
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You want to use os.path.expanduser.
This will ensure it works on all platforms:
from os.path import expanduser
home = expanduser("~")
If you're on Python 3.5+ you can use pathlib.Path.home():
from pathlib import Path
home = str(Path.home())
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Declare variable in table valued function
...an recompose the query with the ITVF inlined into the parent query, essentially becoming a parameterised VIEW whereas a MSTVF behaves more like an opaque stored-procedure (though with its own advantages compared to sprocs). Inline functions should be preferred over MSTVF. If you do need to calculate...
What's a good IDE for Python on Mac OS X? [closed]
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If the question was "What's an IDE for python that actually works and actually has basic functionality" then PyCharm would be the ONLY answer
– samthebest
Dec 3 '13 at 14:47
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Any good boolean expression simplifiers out there? [closed]
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For a quick online tool this is really helpful: tma.main.jp/logic/index_en.html
– Lenar Hoyt
Apr 6 '17 at 0:33
add a comment
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How to add an object to an array
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First of all, there is no object or array. There are Object and Array. Secondly, you can do that:
a = new Array();
b = new Object();
a[0] = b;
Now a will be an array with b as its only element.
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What does void* mean and how to use it?
...a pointer to a function that compares two elements of the array. It gets called like so:
int iArr[10];
double dArr[30];
long lArr[50];
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qsort(iArr, sizeof iArr/sizeof iArr[0], sizeof iArr[0], compareInt);
qsort(dArr, sizeof dArr/sizeof dArr[0], sizeof dArr[0], compareDouble);
qsort(lArr, sizeof...
IntelliJ Split Window Navigation
...how do I switch/toggle from one tab group to another via the keyboard? If all of the tabs are in the same group you can switch from each tab easily (CTRL + right/left arrow), but when they're in separate tab groups I can't. I've searched through the key mappings and have not found one that seems t...
MongoDB inserts float when trying to insert integer
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By default, the mongo shell treats all numbers as floating-point values. So we need to explicitly specify what type of number we want to use e.g. NumberInt or NumberLong. docs.mongodb.org/manual/core/shell-types
– Yadu
S...