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C++ equivalent of Java's toString?
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In C++ you can overload operator<< for ostream and your custom class:
class A {
public:
int i;
};
std::ostream& operator<<(std::ostream &strm, const A &a) {
return strm << "A(" << a.i << ")";
}
This way you can output instances ...
Create table in SQLite only if it doesn't exist already
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Am going to try and add value to this very good question and to build on @BrittonKerin's question in one of the comments under @David Wolever's fantastic answer. Wanted to share here because I had the same challenge as @BrittonKerin and I go...
Rendering a template variable as HTML
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If you don't want the HTML to be escaped, look at the safe filter and the autoescape tag:
safe:
{{ myhtml |safe }}
autoescape:
{% autoescape off %}
{{ myhtml }}
{% endautoescape %}
share
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Render a variable as HTML in EJS
...ot printed out.
<%= code %>
... which is code that is evaluated and printed out (escaped).
<%- code %>
... which is code that is evaluated and printed out (not escaped).
Since you want to print your variable and NOT escape it, your code would be the last type (with the <%-)....
git ahead/behind info between master and branch?
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Here's a trick I found to compare two branches and show how many commits each branch is ahead of the other (a more general answer on your question 1):
For local branches:
git rev-list --left-right --count master...test-branch
For remote branches:
git rev-list --left-rig...
How do you redirect to a page using the POST verb?
...irect somewhere, the HTTP "Location" header tells the browser where to go, and the browser makes a GET request for that page. You'll probably have to just write the code for your page to accept GET requests as well as POST requests.
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How to suppress warnings globally in an R Script
...but the approach of Francesco Napolitano from Sept. 22, 2015, is the safer and more globally-applicable method.
– Andy Clifton
Oct 23 '15 at 18:13
add a comment
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PostgreSQL query to return results as a comma separated list
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You can use the array() and array_to_string() functions togetter with your query.
With SELECT array( SELECT id FROM table ); you will get a result like: {1,2,3,4,5,6}
Then, if you wish to remove the {} signs, you can just use the array_to_string() ...
An expression tree may not contain a call or invocation that uses optional arguments
...s getting this when I made an overload. Something like void Blah(string a) and void Blah(object a). When I tried to MOQ out a call to the version with object, it gave me this error.
– vbullinger
Mar 21 '13 at 14:02
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CSS hide scroll bar if not needed
...flow-y:scroll; if not needed. What I mean is that I am building a website and I have a main area which posts will be displayed and I want to hide the scroll bar if content does not exceed the current width.
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