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Less aggressive compilation with CSS3 calc
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Less no longer evaluates expression inside calc by default since v3.00.
Original answer (Less v1.x...2.x):
Do this:
body { width: calc(~"100% - 250px - 1.5em"); }
In Less 1.4.0 we will have a strictMaths option which requires all Less calculati...
How to find out what group a given user has?
In Unix/Linux, how do you find out what group a given user is in via command line?
5 Answers
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Mercurial (hg) commit only certain files
... auto-add behavior and make Mercurial work like Git does. However, the mq extension might be of interest. That's an advanced extension, but it allows you do to
$ hg qnew feature-x # create new patch
$ hg qrefresh -s foo.c # add a file to the current patch
$ hg qrefresh -s bar.c # add another ...
How to replace a whole line with sed?
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Try this:
sed "s/aaa=.*/aaa=xxx/g"
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How to shuffle a std::vector?
...n intermediate array and it needs to know the item type (DeckCard in this example):
6 Answers
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Is it possible to declare two variables of different types in a for loop?
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C++17: Yes! You should use a structured binding declaration. The syntax has been supported in gcc and clang for years (since gcc-7 and clang-4.0) (clang live example). This allows us to unpack a tuple like so:
for (auto [i, f, s] = std::tuple{1, 1.0, std::string{"ab"}}; i < N; ++i, f += 1.5...
Determine if the device is a smartphone or tablet? [duplicate]
...ng:
Use the Smallest-width Qualifier
If you read the entire topic, they explain how to set a boolean value in a specific value file (as res/values-sw600dp/attrs.xml):
<resources>
<bool name="isTablet">true</bool>
</resources>
Because the sw600dp qualifier is only val...
How to construct a relative path in Java from two absolute paths (or URLs)?
...ich does all the necessary checks for you.
String path = "/var/data/stuff/xyz.dat";
String base = "/var/data";
String relative = new File(base).toURI().relativize(new File(path).toURI()).getPath();
// relative == "stuff/xyz.dat"
Please note that for file path there's java.nio.file.Path#relativize...
Variable declaration placement in C
...It compiles successfully because GCC allows the declaration of s as a GNU extension, even though it's not part of the C89 or ANSI standard. If you want to adhere strictly to those standards, you must pass the -pedantic flag.
The declaration of c at the start of a { } block is part of the C89 standa...
How to name variables on the fly?
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The answer is almost always "no" except when it isn't.
– Shane
Aug 2 '12 at 12:33
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