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Why does PHP consider 0 to be equal to a string?
...o in this case it is going to cast 'e' to an int. Which is not parsable as one and will become 0. A string '0e' would become 0 and would match!
Use ===
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Intent - if activity is running, bring it to front, else start a new one (from notification)
...ivities in the app and this is the parent, singleInstance if you have only one Activity.
– frostymarvelous
May 21 '16 at 15:49
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Best Practice for Exception Handling in a Windows Forms Application?
... things simple.
Exception handling in .NET is more art than science. Everyone will have their favorites to share here. These are just a few of the tips I've picked up using .NET since day 1, techniques which have saved my bacon on more than one occasion. Your mileage may vary.
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Add new item in existing array in c#.net
...e invoking. because the 'Resize' function have a huge performance. bug for one or two time, this is very good.
– a d
Sep 2 '14 at 6:15
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Just what is Java EE really? [closed]
...va EE has this "mysterious shroud" around it for younger Java developers - one that I've been trying to lift myself for quite a while with little success.
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...g ints or std::strings or similar, the EOF bit is set when you extract the one right before the end and the extraction hits the end. You do not need to read again. The reason it doesn't get set when reading from files is because there's an extra \n at the end. I've covered this in another answer. Re...
In MySQL, how to copy the content of one table to another table within the same database?
I am new to MySQL. I would like to copy the content of one table to another table within the same database. Basically, I would like to insert to a table from another table. Is there easy way of doing this?
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What are the differences between NP, NP-Complete and NP-Hard?
...ve proofs that can be verified in polynomial time.
This means that if someone gives us an instance of the problem and a certificate (sometimes called a witness) to the answer being yes, we can check that it is correct in polynomial time.
Example
Integer factorisation is in NP. This is the problem...
Changing one character in a string
...to implement copy-on-modify, or outright copy the whole string in case someone wants to modify that string - this leads to speed increase in generic use. There is no need for things like MID due to slices: s[:index] + c + s[index+1:]
– MultiSkill
Dec 4 '18 at 8...
What is the difference between “px”, “dip”, “dp” and “sp”?
...sity of the screen. These units are relative to a 160
dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of
dp-to-pixel will change with the screen density, but not necessarily
in direct proportion. Note: The compiler accepts both "dip" and
"dp", though "dp" is...