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std::back_inserter for a std::set?
...f an element is determined by the comparator of the set. Use std::inserter and pass it .begin():
std::set<int> s1, s2;
s1 = getAnExcitingSet();
transform(s1.begin(), s1.end(),
std::inserter(s2, s2.begin()), ExcitingUnaryFunctor());
The insert iterator will then call s2.insert(s2....
Can I set variables to undefined or pass undefined as an argument?
I’m a bit confused about JavaScript’s undefined and null values.
10 Answers
10...
How to render an ASP.NET MVC view as a string?
...utput two different views (one as a string that will be sent as an email), and the other the page displayed to a user.
15 A...
How to get a time zone from a location using latitude and longitude coordinates?
...library
ZoneDetect - C library
Timeshape - Java library
TimeZoneMap - Java and Android library
lutz - R library
go-tz - Go library
Timezone lookup - Go library
docker-timezone-lookup - docker container wrapping node-geo-tz
Implementations that use the older tz_world data
latlong - Go library (Rea...
error: writable atomic property cannot pair a synthesized setter/getter with a user defined setter/g
...tried to compile an older Xcode project (which used to compile just fine), and now I'm seeing a lot of errors of this form:
...
How can I modify the size of column in a MySQL table?
I have created a table and accidentally put varchar length as 300 instead of 65353 . How can I fix that?
2 Answers
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Why unsigned integer is not available in PostgreSQL?
...post ( What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL? ) and realized that PostgreSQL does not support unsigned integer.
...
Using “Object.create” instead of “new”
...xist, if you call again this method on an existing object instance, the id and name properties will change.
Object.create lets you initialize object properties using its second argument, e.g.:
var userB = {
sayHello: function() {
console.log('Hello '+ this.name);
}
};
var bob = Object.cre...
What's the yield keyword in JavaScript?
...t it. Can someone explain me (or recommend a site that explains) its usage and what it is used for?
14 Answers
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What are the options for storing hierarchical data in a relational database? [closed]
...in this thread suggested. Use an Adjacency List to maintain the hierarchy and use Nested Sets to query the hierarchy.
The problem up until now has been that the coversion method from an Adjacecy List to Nested Sets has been frightfully slow because most people use the extreme RBAR method known as ...