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How is “int main(){(([](){})());}” valid C++?
...tart from the beginning: [](){} is an empty lambda expression.
Then, in C and C++, you can wrap expressions in parens and they behave exactly the same† as if written without them, so that's what the first pair of parens around the lambda does. We're now at ([](){}).
Then, () after the first wrap...
Convert integer to binary in C#
...ger expressed as a string. Let's say your integer was actually an integer, and you want to take the integer and convert it to a binary string.
int value = 8;
string binary = Convert.ToString(value, 2);
Which returns 1000.
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How to change an input button image using CSS?
...'re looking for. If you need Safari support, you'll need to place an image and have an onclick function that submits the form.
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Java Date cut off time information
I have a Java Date object containing date and time information. I want to write a method that cuts off the time information, truncates the hours-minutes-seconds, so I only have the date left.
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Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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Exporting APK from eclipse (ADT) silently crashes
Every time I try to export an APK from Eclipse (tried Juno and Indigo) on Mac, eclipse crashes after a few seconds
8 Answer...
How to erase the file contents of text file in Python?
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#include<fstream> and then std::ofstream("file.txt"); about as short as in Python. :)
– wilhelmtell
May 4 '10 at 21:44
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PostgreSQL - how to quickly drop a user with existing privileges
I'm trying to make restricted DB users for the app I'm working on, and I want to drop the Postgres database user I'm using for experimenting. Is there any way to drop the user without having to revoke all his rights manually first, or revoke all the grants a user has?
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In-place edits with sed on OS X
I'd like edit a file with sed on OS X. I'm using the following command:
6 Answers
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What makes a SQL statement sargable?
...ery row of the table. Much better to use:
WHERE myDate >= '01-01-2008' AND myDate < '01-01-2009'
Some other examples:
Bad: Select ... WHERE isNull(FullName,'Ed Jones') = 'Ed Jones'
Fixed: Select ... WHERE ((FullName = 'Ed Jones') OR (FullName IS NULL))
Bad: Select ... WHERE SUBSTRING(Deal...