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How can a LEFT OUTER JOIN return more records than exist in the left table?
...ave a very basic LEFT OUTER JOIN to return all results from the left table and some additional information from a much bigger table. The left table contains 4935 records yet when I LEFT OUTER JOIN it to an additional table the record count is significantly larger.
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What to do with commit made in a detached head
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Create a branch where you are, then switch to master and merge it:
git branch my-temporary-work
git checkout master
git merge my-temporary-work
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Laravel Redirect Back with() Message
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Try
return Redirect::back()->withErrors(['msg', 'The Message']);
and inside your view call this
@if($errors->any())
<h4>{{$errors->first()}}</h4>
@endif
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Weird PHP error: 'Can't use function return value in write context'
I'm getting this error and I can't make head or tail of it.
12 Answers
12
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How to check if an object is a generator object in python?
...ance(gen, (types.GeneratorType, map, filter)) is useful to also detect map and filter. This will still not include other iterables and iterators though.
– jlh
May 2 at 14:32
a...
Determine if map contains a value for a key?
...s exist?
No. With the stl map class, you use ::find() to search the map, and compare the returned iterator to std::map::end()
so
map<int,Bar>::iterator it = m.find('2');
Bar b3;
if(it != m.end())
{
//element found;
b3 = it->second;
}
Obviously you can write your own getValue() r...
Building a fat jar using maven
...vn package will produce two jars: one containing just the project classes, and a second fat jar with all dependencies with the suffix "-jar-with-dependencies".
if you want correct classpath setup at runtime then also add following plugin
<plugin>
<groupId>org.apache.maven.plugins&l...
C#操作XML小结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mldoc = new XmlDocument ( ) ;
//加入XML的声明段落,<?xml version="1.0" encoding="gb2312"?>
XmlDeclaration xmldecl;
xmldecl = xmldoc.CreateXmlDeclaration("1.0","gb2312",null);
xmldoc.AppendChild ( xmldecl);
//加入一个根元素
xmlelem = xmldoc.CreateElement ( "" , "Employees" , "" )...
Get class name of object as string in Swift
...me // = "Foo"
Foo.typeName // = "Foo"
Tested with class, struct and enum.
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Two arrays in foreach loop
... generate a selectbox using two arrays, one containing the country codes and another containing the country names.
22 Ans...