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How can I create directory tree in C++/Linux?
... then /tmp/a/b/c because there isn't an equivalent of the -p flag in the C api. Be sure and ignore the EEXISTS errno while you're doing the upper level ones.
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Rails find_or_create_by more than one attribute?
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api.rubyonrails.org/classes/ActiveRecord/…
– Duke
Feb 20 '16 at 0:32
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Why 0 is true but false is 1 in the shell?
...nvestigate the particular error for more details if you want to. A lot of APIs and frameworks have a similar convention - functions that succeed return 0 and and those that fail give back an error code describing the particular failure case.
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How do you read from stdin?
...e in fileinput.input():
pass
But, since sys.stdin implements the file API, including the iterator protocol, that's just the same as this:
import sys
for line in sys.stdin:
pass
Another answer does suggest this. Just remember that if you do it in an interpreter, you'll need to do Ctrl-d if...
jQuery vs document.querySelectorAll
...ross-browsers, flawlessly, offering all that jQuery can offer (plugins and APIs).
Yes, if you think you can rely on simple class and id selectors, jQuery is too much for you, and you'd be paying an exaggerated pay-off. But if you don't, and want to take advantage of all jQuery goodness, then use it...
Difference between attr_accessor and attr_accessible
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Why isn't attr_accessible in the Rails documentation? api.rubyonrails.org
– Chloe
Jan 15 '14 at 3:53
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How can I access an internal class from an external assembly?
...people who publish things as internals which are really part of the public API? Or they used InternalsVisibleTo but didn’t include your assembly? If the symbol isn’t truly hidden, it’s part of the ABI.
– binki
Oct 4 '17 at 23:05
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How to detect incoming calls, in an Android device?
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With Android P - Api Level 28:
You need to get READ_CALL_LOG permission
Restricted access to call logs
Android P moves the CALL_LOG, READ_CALL_LOG, WRITE_CALL_LOG, and PROCESS_OUTGOING_CALLS permissions from the PHONE permission group to th...
Can enums be subclassed to add new elements?
...his approach of deriving an enum from an interface is used by the Java 1.7 API, e.g. java.nio.file.Files.write() takes an array of OpenOption as the last argument. OpenOption is an interface, but when we call this function we usually pass a StandardOpenOption enum constant, which is derived from Ope...
Performing Inserts and Updates with Dapper
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We are looking at building a few helpers, still deciding on APIs and if this goes in core or not. See: https://code.google.com/archive/p/dapper-dot-net/issues/6 for progress.
In the mean time you can do the following
val = "my value";
cnn.Execute("insert into Table(val) values (@v...