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Command not found error in Bash variable assignment
...and foo with STR set to the empty string in its environment.
I'm not sure if this helps to clarify or if it is mere obfuscation, but note that:
the first command is exactly equivalent to: STR "=" "foo",
the second is the same as STR "=foo",
and the last is equivalent to STR="" foo.
The relevant...
Why does my Spring Boot App always shutdown immediately after starting?
...an embedded container (e.g. Tomcat) on the classpath. Adding one fixed it. If you are using Maven, then add this in pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
For Grad...
What's the difference between using INDEX vs KEY in MySQL?
...
There's no difference. They are synonyms.
From the CREATE TABLE manual entry:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can
also be specified as just KEY when given in a column definition. This was
imple...
Is it possible to use getters/setters in interface definition?
...
You can specify the property on the interface, but you can't enforce whether getters and setters are used, like this:
interface IExample {
Name: string;
}
class Example implements IExample {
private _name: string = "Bob";
...
How to add a search box with icon to the navbar in Bootstrap 3?
... the official bootstrap site, here: getbootstrap.com/components/#navbar -- If you'd like to try, please do, or I'll check again when my site is up and let you know. Thanks for trying to help. +1
– its_me
Sep 4 '13 at 19:11
...
Different floating point result with optimization enabled - compiler bug?
...it extended precision internally, whereas double is normally 64-bit wide. Different optimization levels affect how often floating point values from CPU get saved into memory and thus rounded from 80-bit precision to 64-bit precision.
Use the -ffloat-store gcc option to get the same floating point r...
Why should I care that Java doesn't have reified generics?
...the candidate wished to see added to the Java language. It's commonly-identified as a pain that Java doesn't have reified generics but, when pushed, the candidate couldn't actually tell me the sort of things that he could have achieved were they there.
...
C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...m;
queue<int> q1;
for(int i=0;i<10;i++)
q1.push(i);
if(!q1.empty())
cout<<"dui lie bu kong\n";
n=q1.size();
cout<<n<<endl;
m=q1.back();
cout<<m<<endl;
for(int j=0;j<n;j++)
{
e=q1.front();
cout<<e<<" ";
q1.pop();
...
SVG Positioning
...s are identical (apart from the colors), but the parent svg elements have different x values.
See http://tutorials.jenkov.com/svg/svg-element.html.
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Business logic in MVC [closed]
...er clicks the "delete" button next to one of the emails, the controller notifies the model to delete entry N, then notifies the view the model has changed.
Perhaps the admin's email should never be removed from the list. That's a business rule, that knowledge belongs in the model. The view may ulti...