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Get first key in a (possibly) associative array?
...ay without resetting the internal pointer. Check out the documentation for more info.
You can use reset and key:
reset($array);
$first_key = key($array);
It's essentially the same as your initial code, but with a little less overhead, and it's more obvious what is happening.
Just remember to ...
What .NET collection provides the fastest search
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What is the minimum valid JSON?
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@amdorra: Can you be more specific where you're seeing that?
– Matt
Aug 24 '13 at 14:22
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What's the difference between Unicode and UTF-8? [duplicate]
... UTF-8 is not only an encoding, it's also a character set. Or more precisely, UTF-8 uses Unicode as its character set. What I mean is you can't use it as an encoding for another character set.
– yannick1976
Jan 28 '18 at 16:55
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Explain how finding cycle start node in cycle linked list work?
...to X_mu, the start of the cycle (by definition of mu). Then if you take i more steps, where i is a multiple of the cycle length, you end up back at the cycle start: X_mu + i = X_mu. But addition is commutative, so this is equivalent to taking i steps to get from the start to the first meeting point...
Repeat Character N Times
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The loop method may be faster but its more verbose. Plus I'm puzzled by all the upvotes for the first comment, considering that when this is generally going to be useful when the Array length is variable, e.g. Array(rawValue.length + 1).join("*")
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How do you keep user.config settings across different assembly versions in .net?
...sion of the application) all their settings are reset the the defaults (or more accurately a new user.config file is created in a folder with a different version number as the name)
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Make first letter of a string upper case (with maximum performance)
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Google Play on Android 4.0 emulator
...-boot-anim
Then use the following commands:
# Remount in rw mode.
# NOTE: more recent system.img files are ext4, not yaffs2
adb shell mount -o remount,rw -t yaffs2 /dev/block/mtdblock0 /system
# Allow writing to app directory on system partition
adb shell chmod 777 /system/app
# Install following...
Trouble comparing time with RSpec
...ect(@article.updated_at.utc.to_i).to eq(Time.now.to_i)
Refer to this for more information about why the times are different
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