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GCC dump preprocessor defines
...
Late answer - I found the other answers useful - and wanted to add a bit extra.
How do I dump preprocessor macros coming from a particular header file?
echo "#include <sys/socket.h>" | gcc -E -dM -
or (thanks to @mymedia for the suggestion):
gcc -E -dM -include sys/socket.h - < /de...
What's an elegant way to conditionally add a class to an HTML element in a view?
...classes mixed with default classes, then you need to put that logic into a string interpolation or ERB tag.
Here's an updated approach that avoids putting any logic into the views:
<div class="<%= class_string(ok: @success) %>">
some message here
</div>
class_string method
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Filter Java Stream to 1 and only 1 element
... our objects in a List with the Collectors.toList() collector.
Applying an extra finisher at the end, that returns the single element — or throws an IllegalStateException if list.size != 1.
Used as:
User resultUser = users.stream()
.filter(user -> user.getId() > 0)
.collect(...
Best GWT widget library? [closed]
...se due to the dependency on some external AJAX library. This, as well, add extra size to your solution. Note, as well, that most of the widget libraries depend on one or more additional external components.
– IgorM
May 18 '09 at 20:09
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How to len(generator()) [duplicate]
...lution as it describes what I want to get, and it doesn't give me anything extra that's not required (such as a list of all the elements).
Also listen to delnan's advice: If you're discarding the output of the generator it is very likely that there is a way to calculate the number of elements witho...
How do I create a readable diff of two spreadsheets using git diff?
... Doesn't this do cell by cell comparison? I mean if left side has one extra row at top, it will give all the remaining rows (and cells) different. If it is like that, that is not very useful.
– Hammad Khan
Nov 16 '11 at 14:12
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Are the decimal places in a CSS width respected?
...r. While they do round up visually by themselves, they also don't take up extra space when put next to other fractionally dimensioned elements: cssdesk.com/8R2rB
– Sandy Gifford
Apr 7 '14 at 16:56
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Check for null in foreach loop
...s; everything else is going to involve much more work (tests, assignments, extra method calls, unnecessary GetEnumerator(), MoveNext(), Dispose() on the iterator, etc).
An if test is simple, obvious, and efficient.
share
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Why doesn't Java allow generic subclasses of Throwable?
...eException<Integer> e) {
// ignore that
} catch (SomeException<String> e) {
crashAndBurn()
}
Both SomeException<Integer> and SomeException<String> are erased to the same type, there is no way for the JVM to distinguish the exception instances, and therefore no way to ...
How do I tell if a regular file does not exist in Bash?
... you are free to edit my post and add it to the list. I guess you mean: -n String - Check if the length of the string isn't zero. Or do you mean file1 -nt file2 - Check if file1 is newer then file 2 (you can also use -ot for older then)
– BlueCacti
May 5 '14 at...