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JavaScript: replace last occurrence of text in a string
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I know this is silly, but I'm feeling creative this morning:
'one two, one three, one four, one'
.split(' ') // array: ["one", "two,", "one", "three,", "one", "four,", "one"]
.reverse() // array: ["one", "four,", "one", "three,", "one", "two,", "one"]
.join(' ') // string: "one four, on...
Difference Between One-to-Many, Many-to-One and Many-to-Many?
...o how concepts like uni-directional and bi-directional mappings affect the one-to-many/many-to-many relationships. I'm using Hibernate right now so any explanation that's ORM related will be helpful.
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Regex for password must contain at least eight characters, at least one number and both lower and up
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Minimum eight characters, at least one letter and one number:
"^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$"
Minimum eight characters, at least one letter, one number and one special character:
"^(?=.*[A-Za-z])(?=.*\d)(?=.*[@$!%*#?&])[A-Za-z\d@$!%*#?&]{8...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。
第50条：熟悉STL相关的Web站点。
SGI STL站点：http://www.sig.com/tech/stl/
STLport站点：http://stlport.org
BOost站点：http://boost.org
C++ STL 容器
MySQL: multiple tables or one table with many columns?
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Any time information is one-to-one (each user has one name and password), then it's probably better to have it one table, since it reduces the number of joins the database will need to do to retrieve results. I think some databases have a limit on t...
const char* concatenation
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In your example one and two are char pointers, pointing to char constants. You cannot change the char constants pointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead yo...
Too many 'if' statements?
...2 },
{ 0, 0, 2, 1 },
{ 2, 1, 3, 3 },
{ 1, 2, 3, 3 }
};
return result[one][two];
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How to calculate “time ago” in Java?
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@Benj - Does it right ? above solution ? because one time is in 12 hour format and another time is in 24 hour format. Let me know your feedback for my query. Thank you in advanced.
– Swift
Dec 15 '16 at 6:50
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Singleton: How should it be used
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Answer:
Use a Singleton if:
You need to have one and only one object of a type in system
Do not use a Singleton if:
You want to save memory
You want to try something new
You want to show off how much you know
Because everyone else is doing it (See cargo cult programme...
Unique BooleanField value in Django?
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Whenever I've needed to accomplish this task, what I've done is override the save method for the model and have it check if any other model has the flag already set (and turn it off).
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one ...