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Java Equivalent of C# async/await?
...user960567: You need to distinguish between the version of C# you're using and the version of .NET you're using. async/await is a language feature - it was introduced in C# 5. Yes, you can use Microsoft.Bcl.Async to use async/await targeting .NET 4, but you've still got to use a C# 5 compiler.
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How to find a table having a specific column in postgresql
...attribute as a on a.attrelid = c.oid
where a.attname = <column name> and c.relkind = 'r'
sql fiddle demo
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Difference between toFixed() and toPrecision()?
I'm new to JavaScript and just discovered toFixed() and toPrecision() to round numbers. However, I can't figure out what the difference between the two is.
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LIKE vs CONTAINS on SQL Server
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The second (assuming you means CONTAINS, and actually put it in a valid query) should be faster, because it can use some form of index (in this case, a full text index). Of course, this form of query is only available if the column is in a full text index. If it isn...
Unix - create path of folders and file
I know you can do mkdir to create a directory and touch to create a file, but is there no way to do both operations in one go?
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Get Character value from KeyCode in JavaScript… then trim
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Maybe I didn't understand the question correctly, but can you not use keyup if you want to capture both inputs?
$("input").bind("keyup",function(e){
var value = this.value + String.fromCharCode(e.keyCode);
});
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Autolayout - intrinsic size of UIButton does not include title insets
...on width is derived from the title width plus the icon width plus the left and right content edge insets.
If a button has both an image and text, they’re centered as a group, with no padding between.
If you add a left content inset, it’s calculated relative to the text, not the text + icon.
If y...
Difference between “git checkout ” and “git checkout -- ”
...er what it looks like." This is not Git-specific, it's a general Unix command line convention. Normally you use it to clarify that an argument is a file name rather than an option, e.g.
rm -f # does nothing
rm -- -f # deletes a file named "-f"
git checkout1 also takes -- to mean that sub...
How to sum up elements of a C++ vector?
...tor.begin(); it != vector.end(); ++it)
sum_of_elems += *it;
Using a standard algorithm:
#include <numeric>
sum_of_elems = std::accumulate(vector.begin(), vector.end(), 0);
Important Note: The last argument's type is used not just for the initial value, but for the type of the resu...
MongoDB relationships: embed or reference?
...n a single document as you can. Because MongoDB documents have structure, and because you can efficiently query within that structure (this means that you can take the part of the document that you need, so document size shouldn't worry you much) there is no immediate need to normalize data like yo...