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How to count TRUE values in a logical vector
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@YossiFarjoun Yes, and it's in my answer. This are examples why it won't work. My sollution is sum(z, na.rm = TRUE)
– Marek
May 21 '19 at 13:36
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How do I auto-hide placeholder text upon focus using css or jquery?
...input type="text" placeholder="Type something here!">
Firefox 15 and IE 10+ also supports this now. To expand on Casey Chu's CSS solution:
input:focus::-webkit-input-placeholder { color:transparent; }
input:focus:-moz-placeholder { color:transparent; } /* FF 4-18 */
input:focus::-moz-plac...
$.ajax - dataType
...ct.
Expecting JSON, or XML, or HTML, etc. The default is for jQuery to try and figure it out.
The $.ajax() documentation has full descriptions of these as well.
In your particular case, the first is asking for the response to be in UTF-8, the second doesn't care. Also the first is treating the...
How to wait for all goroutines to finish without using time.Sleep?
...s code selects all xml files in the same folder, as the invoked executable and asynchronously applies processing to each result in the callback method (in the example below, just the name of the file is printed out).
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Where does gcc look for C and C++ header files?
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`gcc -print-prog-name=cc1plus` -v
This command asks gcc which C++ preprocessor it is using, and then asks that preprocessor where it looks for includes.
You will get a reliable answer for your specific setup.
Likewise, for the C preprocessor:
`gcc -print-prog-name=...
How is Pythons glob.glob ordered?
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It is probably not sorted at all and uses the order at which entries appear in the filesystem, i.e. the one you get when using ls -U. (At least on my machine this produces the same order as listing glob matches).
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Checking if object is empty, works with ng-show but not from controller?
...defined:
$scope.items = null;
In this way, ng-show should keep working, and in your controller you can just do:
if ($scope.items) {
// items have value
} else {
// items is still null
}
And in your $http callbacks, you do the following:
$http.get(..., function(data) {
$scope.items...
How to shuffle a std::vector?
...but I think it's not very efficient because it needs an intermediate array and it needs to know the item type (DeckCard in this example):
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Function to calculate distance between two coordinates
I'm currently using the function below and it doesn't work properly. According to Google Maps, the distance between these coordinates (from 59.3293371,13.4877472 to 59.3225525,13.4619422 ) are 2.2 kilometres while the function returns 1.6 kilometres. How can I make this function return the ...
Convert sqlalchemy row object to python dict
Is there a simple way to iterate over column name and value pairs?
36 Answers
36
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