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cannot download, $GOPATH not set
...ctory.
export GOPATH="$HOME/your-workspace-dir/" -- run it in your shell, then add it to ~/.bashrc or equivalent so it will be set for you in the future. Go will install packages under src/, bin/, and pkg/, subdirectories there. You'll want to put your own packages somewhere under $GOPATH/src, like...
How can mixed data types (int, float, char, etc) be stored in an array?
...you want to access an element of the array, you must first check the type, then use the corresponding member of the union. A switch statement is useful:
switch (my_array[n].type) {
case is_int:
// Do stuff for integer, using my_array[n].ival
break;
case is_float:
// Do stuff for float, ...
Calling remove in foreach loop in Java [duplicate]
... been iterated over yet, you still don't want to modify the collection and then use the Iterator. It might modify the collection in a way that is surprising and affects future operations on the Iterator.
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Evil Mode best practice? [closed]
...y primary editor for years and tried Emacs several times during that time. Then I discovered Evil and decided that it meets my demand for speedy movement well enough that I can finally move on to Emacs.
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How can I escape white space in a bash loop list?
...it however you want
If your find doesn't support -print0, your result is then unsafe -- the below will not behave as desired if files exist containing newlines in their names (which, yes, is legal):
# this is unsafe
while IFS= read -r n; do
printf '%q\n' "$n"
done < <(find test -mindepth ...
How to make my custom type to work with “range-based for loops”?
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If range-based for uses a different lookup mechanism, then maybe it's possible to arrange that range-based for gets a different pair of begin and end functions than is available in normal code. Perhaps they could then be very specialized to behave differently (i.e. faster by ign...
Why is “copy and paste” of code dangerous? [closed]
...re the duplicates are easily to either later abstract them or update them, then copy and paste isn't a bad thing to do. See discussion on clone detection at www.semanticdesigns.com/Products/Clone for further details and for tools than can do this.
– Ira Baxter
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How to remove all CSS classes using jQuery/JavaScript?
...r('class', '');
$('#item')[0].className = '';
If you didn't have jQuery, then this would be pretty much your only option:
document.getElementById('item').className = '';
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How to convert a string Date to long millseconds
...uestion. In 2012 when the question was asked, the answers also posted back then were good answers. Why the answers posted in 2016 also use the then long outdated classes SimpleDateFormat and Date is a bit more of a mystery to me. java.time, the modern Java date and time API also known as JSR-310, is...
What is a coroutine?
... and control is returned to the calling function. The calling function can then transfer execution back to the yielding function and its state will be restored to the point where the 'yield' was encountered and execution will continue.
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