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Batch files: How to read a file?
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This is a pretty complex example, parsing very specific information from a particularly formatted text file, without giving any explanation. As per for /? the command would parse each line in myfile.txt, ignoring lines that begin with a semicolon, passing the 2nd and 3rd toke...
What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?
Is there any differences in invoking variables with syntax ${var} and $(var) ? For instance, in the way the variable will be expanded or anything?
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URL encoding in Android
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What if the whole url is unreliable? Should I encode everything except the protocol? I kind of expected a convenience method to do this.
– hpique
Jul 20 '10 at 0:28
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Mark parameters as NOT nullable in C#/.NET?
...a new struct and conversions.
In .NET 4.0 with the Code Contracts stuff, life will be a lot nicer. It would still be quite nice to have actual language syntax and support around non-nullability, but the code contracts will help a lot.
I also have an extension method in MiscUtil called ThrowIfNull ...
Spring Cache @Cacheable - not working while calling from another method of the same bean
...et object,
will not lead to an actual cache interception at runtime even if the
invoked method is marked with @Cacheable.
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Explode string by one or more spaces or tabs
...e size of the array of substrings
$sizeParts = sizeof($parts);
# Check if the last element of the array is a zero-length string
if ($sizeParts > 0) {
$lastPart = $parts[$sizeParts-1];
if ($lastPart == '') {
array_pop($parts);
$sizeParts--;
}
# Check if the first ...
How to format a number as percentage in R?
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With usage, e.g.,
x <- c(-1, 0, 0.1, 0.555555, 1, 100)
percent(x)
(If you prefer, change the format from "f" to "g".)
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Select the values of one property on all objects of an array in PowerShell
...oth the input collection and output array must fit into memory as a whole.
If the input collection is itself the result of a command (pipeline) (e.g., (Get-ChildItem).Name), that command must first run to completion before the resulting array's elements can be accessed.
In a pipeline where the r...
Determine a user's timezone
...et() will subtract your time from GMT and return the number of minutes. So if you live in GMT-8, it will return 480.
To put this into hours, divide by 60. Also, notice that the sign is the opposite of what you need - it's calculating GMT's offset from your time zone, not your time zone's offset fro...
Is the order of iterating through std::map known (and guaranteed by the standard)?
...nts are sorted according to the keys. So, let's say the keys are integers. If I iterate from std::map::begin() to std::map::end() using a for , does the standard guarantee that I'll iterate consequently through the elements with keys, sorted in ascending order?
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