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Remove characters after specific character in string, then remove substring?
...t I couldn't find quite what I needed (except in another language: Remove All Text After Certain Point ).
8 Answers
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Can “using” with more than one resource cause a resource leak?
...l zero and we leak the handle!
You need to write extremely clever code in order to prevent this leak from happening. Now, in the case of your Font resource, who the heck cares? We leak a font handle, big deal. But if you absolutely positively require that every unmanaged resource be cleaned up no ...
Define make variable at rule execution time
...porary directory created) whenever the rules for out.tar are evaluated. In order to create the directory only when out.tar is actually fired, you need to move the directory creation down into the steps:
out.tar :
$(eval TMP := $(shell mktemp -d))
@echo hi $(TMP)/hi.txt
tar -C $(TMP) cf...
Two single-column indexes vs one two-column index in MySQL?
...he first three columns, and so on. If you specify the columns in the right order in the index definition, a single composite index can speed up several kinds of queries on the same table." - Multiple-Column Indexes
– AlikElzin-kilaka
Sep 9 '18 at 4:46
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How to run a background task in a servlet based web application?
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I would suggest using a library like quartz in order to run the task at regular intervals. What does the servlet really do ? It sends you a report ?
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List all base classes in a hierarchy of given class?
...s NewClass.mro(): a list of the class and all its ancestor classes, in the order used for method resolution.
>>> class A(object):
>>> pass
>>>
>>> class B(A):
>>> pass
>>>
>>> import inspect
>>> inspect.getmro(B)
(<c...
CSS Selector “(A or B) and C”?
... As of five o'clock this morning, yes! I have js that spits out first order logic, with selectors at the leaves, giving results such as :not(:not([data-status="ACT"]):not([data-status="ISS"]):not([data-status="COR"]))[data-month="08"]. The code is not clean enough for public perusal, yet, othe...
How do you get a string to a character array in JavaScript?
...: 12.2.5 Array Initializer
spread is also referenced as "splat" (e.g. in PHP or Ruby or as "scatter" (e.g. in Python).
Demo
Try before buy
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When should I use the Visitor Design Pattern? [closed]
...virtual void hereIsACat(Cat *c) = 0;
};
Then, we modify the hierarchy in order to accept new operations:
class Animal
{ public: virtual void letsDo(Operation *v) = 0; };
class Dog : public Animal
{ public: void letsDo(Operation *v); };
void Dog::letsDo(Operation *v)
{ v->hereIsADog(this); }
...
Use of #pragma in C
...Hello from thread 1
Hello from thread 2
Hello from thread 3
Note that the order of output can vary on different machines.
now let me tell you what #pragma did...
it tells the OS to run the some block of code on 4 threads
this is just one of many many applications you can do with the little #pra...