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How to sum up elements of a C++ vector?
What are the good ways of finding the sum of all the elements in a std::vector ?
11 Answers
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How can I merge two hashes without overwritten duplicate keys in Ruby?
...lts.merge(options)
Or, if you're using Rails you can do:
options.reverse_merge!(defaults)
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Converting a Pandas GroupBy output from Series to DataFrame
...1.index
Out[20]:
MultiIndex([('Alice', 'Seattle'), ('Bob', 'Seattle'), ('Mallory', 'Portland'),
('Mallory', 'Seattle')], dtype=object)
Perhaps you want something like this?
In [21]: g1.add_suffix('_Count').reset_index()
Out[21]:
Name City City_Count Name_Count
0 Alice S...
Get push notification while App in foreground iOS
... app received push notifications in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
{
completionHandler([.alert, .badge, .sound...
URL Encode a string in jQuery for an AJAX request
...codeURIComponent works fine for me. we can give the url like this in ajax call.The code shown below:
$.ajax({
cache: false,
type: "POST",
url: "http://atandra.mivamerchantdev.com//mm5/json.mvc?Store_Code=ATA&Function=Module&Module_Code=thub_connector&Module_Function=THUB_R...
string.Join on a List or other type
... strings from a list of ints so that String.Join(String, String[]) can be called. Only thing I'd say is that it's unusual to see this method written as an extension on String as opposed to IEnumerable<String> - I tend to always call it at the end of a long chain of extension method calls.
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Should *.xccheckout files in Xcode5 be ignored under VCS?
...fferent repositories, the presence of an .xccheckout file in the workspace allows Xcode to know what all of the components that make up a workspace are and where to get them.
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Send an Array with an HTTP Get
... single value.
foo[]=value1&foo[]=value2&foo[]=value3
$foo = $_GET["foo"]; // [value1, value2, value3]
echo is_array($foo); // true
In case you still use foo=value1&foo=value2&foo=value3, then it'll return only the first value.
$foo = $_GET["foo"]; // value1
echo is_array($fo...
Necessary to add link tag for favicon.ico?
Are there any modern browsers that won't detect the favicon.ico automatically? Is there any reason to add the link tag for favicon.ico?
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Cannot highlight all occurrences of a selected word in Eclipse
...C/C++ Write occurrences. But still when I select a word it won't highlight all occurrences of that specific word.
12 Answer...