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Why are unnamed namespaces used and what are their benefits?
...ace unique;
namespace unique { /* namespace body. stuff in here */ }
The extra step using the empty body is important, so you can already refer within the namespace body to identifiers like ::name that are defined in that namespace, since the using directive already took place.
This means you ca...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...t. You're suggesting that in order to be parsimonious about not adding one extra factory method and node type amongst the several dozen already there, that we add a bizarre corner case to constants, so that constants are sometimes logically constants, and sometimes they are rewritten lambdas with cl...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...rator<<(std::endl);. and since there is a free function which takes char const* as second argument, "\n" works; '\n' would work as well.
– Nawaz
Jun 6 '16 at 5:42
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Change UICollectionViewCell size on different device orientations
...ls with animation (you can just pass nil to both block params if you've no extra adjustments to perform).
2) Instead of hardcoding the item sizes in -collectionView:layout:sizeForItemAtIndexPath, just divide the height or width of the collectionView's bounds by the number of cells you want to fit o...
Print in one line dynamically
...s about this that may be surprising:
The \r goes at the beginning of the string so that, while the program is running, the cursor will always be after the number. This isn't just cosmetic: some terminal emulators get very confused if you do it the other way around.
If you don't include the last l...
what is faster: in_array or isset? [closed]
...ated and contain non-hashable objects. Keys must be unique and can only be strings and integers which makes them easily hashable. While you could create a one-to-one map that hashes both keys and values, this isn't how PHP's array works.
– David Harkness
Nov 20...
SQL: deleting tables with prefix
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Note to self.Increase num of max char: SET SESSION group_concat_max_len = 999999999;
– Mohammed Joraid
Apr 12 '15 at 0:59
2
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Rearrange columns using cut
...areful to quote the values "$col2" and "$col1" -- there could be shell metacharacters or other shenanigans in the data.
– tripleee
Mar 29 '17 at 5:08
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...
Difference between CR LF, LF and CR line break types?
...always sent with the CR
first. In fact, it was often necessary
to send extra characters (extraneous
CRs or NULs, which are ignored) to
give the print head time to move to
the left margin. Even after teletypes
were replaced by computer terminals
with higher baud rates, many operating
...
How to check if command line tools is installed
...
Yosemite
Below are a few extra steps on a fresh Mac that some people might need. This adds a little to @jnovack's excellent answer.
Update: A few other notes when setting this up:
Make sure your admin user has a password. A blank password won't w...