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Simultaneously merge multiple data.frames in a list
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I tested this solution on R2.7.2 and I get the same match.names error. So there's some more fundamental problem with this solution and my data. I used the code: Reduce(function(x, y) merge(x, y, all=T,by.x=match.by, by.y=match....
Detect 7 inch and 10 inch tablet programmatically
...s easy as described above -- use Configuration.smallestScreenWidthDp, then test accordingly:
resources.getConfiguration().smallestScreenWidthDp
Otherwise, if you can afford this, use the following method which is a very accurate approach to detect 600dp (like 6") vs. 720dp (like 10") by letting t...
Where can I find WcfTestClient.exe (part of Visual Studio)
The MSDN docs state that I can find the WCF Test Client in:
11 Answers
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Your content must have a ListView whose id attribute is 'android.R.id.list'
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One other thing that affected me: If you have multiple test devices, make sure you are making changes to the layout used by the device. In my case, I spent a while making changes to xmls in the "layout" directory until I discovered that my larger phone (which I switched to halfwa...
Count occurrences of a char in a string using Bash
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Building on everyone's great answers and comments, this is the shortest and sweetest version:
grep -o "$needle" <<< "$haystack" | wc -l
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String concatenation: concat() vs “+” operator
...l produces exactly the same code, but the bytecode compiler cheats. Simple testing entirely fails because the entire body of code is thrown away. Summing System.identityHashCode (not String.hashCode) shows the StringBuffer code has a slight advantage. Subject to change when the next update is releas...
How to check if array element exists or not in javascript?
...hey have the prototype method hasOwnProperty "inherited" from Object
in my testing, hasOwnProperty can check if anything exists at an array index.
So, as long as the above is true, you can simply:
const arrayHasIndex = (array, index) => Array.isArray(array) && array.hasOwnProperty(inde...
Difference between “!==” and “==!” [closed]
...imple comparison ( if ($var ==! " ") ) didn't work as expected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! in any language so I wondered how the hell this code could even work and did some testing:
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Get controller and action name from within controller?
...xample of using System.Web.HttpContext static reference)
string sessionTest = System.Web.HttpContext.Current.Session["test"] as string
}
NOTE: likely not the most supported way to access all properties in HttpContext, but for RequestContext and Session it appears to work fine in my application...
Returning an array using C
...ved_from(srcArray[i]);
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}
int main(void)
{
char src[] = "This is a test";
char dst[sizeof src];
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returnArray(src, sizeof src, dst, sizeof dst);
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}
Another method is for the function to allocate the array dynamically and return the pointer and size:
char *returnArray(const ch...