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Creating an R dataframe row-by-row
...as you need
stringsAsFactors=FALSE) # you don't know levels yet
and then during your operations insert row at a time
DF[i, ] <- list(1.4, "foo")
That should work for arbitrary data.frame and be much more efficient. If you overshot N you can always shrink empty rows...
Converting Integer to Long
...though you can convert from int to long. For an individual value which is known to be a number and you want to get the long value, you could use:
Number tmp = getValueByReflection(inv.var1(), classUnderTest, runtimeInstance);
Long value1 = tmp.longValue();
For arrays, it will be trickier...
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Tainted canvases may not be exported
...r me
img.src = src;
return img;
}
And in your callback you can now use ctx.drawImage and export it using toDataURL
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How do I change the number of open files limit in Linux? [closed]
... -a. I changed the wildcare, and added a * inside limits.conf. All is good now, (im using ssh keys don't worry :P) -- Thank you!!!
– NiCk Newman
Jun 13 '16 at 15:24
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Tracking the script execution time in PHP
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Just adding a small update: This function is now supported on Windows as well.
– ankush981
Jun 21 '15 at 7:30
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TypeScript Objects as Dictionary types as in C#
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You may know this, but there are also some potential gotchas with this approach, the big one being that there's no safe and easy way to iterate through all the members. This code, for instance, shows that map contains two members: (...
Count the items from a IEnumerable without iterating?
...o get the elements you ask for just before you need them.
If you want to know the number of items without iterating over them you can use ICollection<T>, it has a Count property.
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Advantages of Binary Search Trees over Hash Tables
...array. Of course, the ultimate number of elements being added may not be known, so the hash table may still allocate more space than is necessary. Binary search trees can waste just as much memory or more, though. Linked implementations need space for at least two additional pointers per element ...
How do I find the location of the executable in C? [duplicate]
...me/where/else/foo # create a hard link to foo
$ /some/where/else/foo
Now, the approach above (including, I suspect, /proc/$pid/exe) will give /some/where/else/foo as the real path to the program. And, in fact, it is a real path to the program, just not the one you wanted. Note that this prob...
How to resize an image to fit in the browser window?
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Thank you, solved now. If anybody have same problem (.svg file renders well, but renaming it to .html causes inaccuracy): browser automatically adds <body> tag with default margin:8 even if the file hasn't <body> tag. So solution i...