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Why doesn't String switch statement support a null case?
... although mostly implicitly by putting the string constant first as in "123test".equals(value). Now we are forced to write our switch statement as in if (value != null) switch (value) {...
– YoYo
Feb 4 '16 at 23:06
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What is the use of the @ symbol in PHP?
...are places where the setup script gets called multiple times, so I have to test. What, if any, problem would there be in simply using @session_start(); ?
– Stephen R
Jul 16 '18 at 18:12
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What is Data Transfer Object?
...ot contain any business logic or methods implementation that would require testing.
Normally your model (using the MVC pattern) are intelligent models, and they can contain a lot of/some methods that do some different operations for that model specifically (not business logic, this should be at the...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...-1]
df = df.iloc[ np.unique( df.index.values, return_index = True )[1] ]
Tests: 10k loops using OP's data
numpy method - 3.03 seconds
df.loc[~df.index.duplicated(keep='first')] - 4.43 seconds
df.groupby(df.index).first() - 21 seconds
reset_index() method - 29 seconds
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What is the difference between vmalloc and kmalloc?
...ory at boot.
*) This was true of earlier kernels. On recent kernels (I tested this on 2.6.33.2), max size of a single kmalloc is up to 4 MB! (I wrote a fairly detailed post on this.) — kaiwan
For a system call you don't need to pass GFP_ATOMIC to kmalloc(), you can use GFP_KERNEL. You're not...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...ionDetector.aix extension as described in part 2 below using the extension test send (2) may need to be rebuilt as the system evolves.
Contents
rver.
Keep in mind that the extensions mechanism is still unstable and under development. Any aia files you build in steps (1) a
Using App Inventor ex...
Not equal != operator on NULL
...
The only test for NULL is IS NULL or IS NOT NULL. Testing for equality is nonsensical because by definition one doesn't know what the value is.
Here is a wikipedia article to read:
https://en.wikipedia.org/wiki/Null_(SQL)
...
How to send a header using a HTTP request through a curl call?
... --header parameter. example: curl --header "Accept: javascript" --header "test: hello" -v www.google.com
– Hatoru Hansou
Sep 24 '15 at 6:41
2
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What does an exclamation mark mean in the Swift language?
...t basically tells the compiler "I know this has a value, you don't need to test for it". If you didn't want to use it, you could conditionally test for it:
if let otherPerson = john {
otherPerson.apartment = number73
}
The interior of this will only evaluate if john has a value.
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For files in directory, only echo filename (no path)
... basename won't work correctly for files with space. Example: pwd output: /test 1, basename $(pwd) output: test. Tested on OS X and Ubuntu Server (14.04). Native bash solution, as @SiegeX recommended, is what worked for me.
– Marko Grešak
Nov 9 '14 at 0:56
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