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PHP - iterate on string characters
...like to be able to do foreach , array_map , array_walk , array_filter etc. on the characters of a string.
9 Answers
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How do you create a daemon in Python?
...rectly if started inside an already-detached context, such as init, inetd, etc.
set up signal handlers for sensible daemon behaviour, but also with specific handlers determined by the use case
redirect the standard streams stdin, stdout, stderr since a daemon process no longer has a controlling term...
Search and replace in Vim across all the project files
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I've decided to use ack and Perl to solve this problem in order to take advantage of the more powerful full Perl regular expressions rather than the GNU subset.
ack -l 'pattern' | xargs perl -pi -E 's/pattern/replacement/g'
Explanation
ack
ack is an awesome command line tool th...
Why is my Spring @Autowired field null?
...beans and determine how to instantiate and configure them in the necessary order.
The IoC container isn't magic, and it has no way of knowing about Java objects unless you somehow inform it of them. When you call new, the JVM instantiates a copy of the new object and hands it straight to you--it ne...
How to create abstract properties in python abstract classes
...orrectly identified as abstract when applied to an abstract method.
Note: Order matters, you have to use @property before @abstractmethod
Python 3.3+: (python docs):
class C(ABC):
@property
@abstractmethod
def my_abstract_property(self):
...
Python 2: (python docs)
class C(...
Get a list of all threads currently running in Java
...rse, readability is an important factor, and one should not micro-optimize etc. However, I did my research while writing a small application performance monitor. For this kind of tool, a minimal performance imprint is essential to get reliable data, so I chose the stacktrace-less method.
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What is sharding and why is it important?
... is basically the process of distributing tables onto different servers in order to balance the load onto both equally.
Of course, it's so much more complicated in reality. :)
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How to add 30 minutes to a JavaScript Date object?
...is one note from me - semantically, the unit should be "minute", "second", etc. and the interval should be the amount (2, 10, 45, ...), not vice versa. Otherwise the idea is good.
– Vasil Popov
Feb 20 '17 at 10:16
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Stored procedure slow when called from web, fast from Management Studio
...nt Scan that does not access the table at all (run the query SELECT * FROM Orders WHERE OrderDate > NULL to see an example of this). But SQL Server must generate a plan which returns the correct result no matter what value @fromdate has at run-time. On the other hand, there is no obligation to bu...
boundingRectWithSize for NSAttributedString returning wrong size
... a single one must all use the SAME dictionary (and thus the same font) in order for boundingRectWithSize to work correctly!
– Ben Wheeler
Aug 2 '13 at 18:05
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