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Foreign Key to non-primary key
... this really does make sense if you think about it.
Although, as has been m>me m>ntioned, if you have a perfectly good primary key as a candidate key, why not use that?
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How to update PATH variable permanently from Windows command line?
If I execute set PATH=%PATH%;C:\\Som>me m>thing\\bin from the command line ( cmd.exe ) and then execute echo %PATH% I see this string added to the PATH. If I close and open the command line, that new string is not in PATH.
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What is Cache-Control: private?
... date]
Cache-Control: max-age=[seconds]
The server kindly asked any interm>me m>diate proxies to not cache the contents (i.e. the item should only be cached in a private cache, i.e. only on your own local machine):
Cache-Control: private
But the server forgot to include any sort of caching hints:
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How is __eq__ handled in Python and in what order?
...king B.__eq__ to see if it knows how to compare itself to an int.
If you am>me m>nd your code to show what values are being compared:
class A(object):
def __eq__(self, other):
print("A __eq__ called: %r == %r ?" % (self, other))
return self.value == other
class B(object):
def __...
How to get disk capacity and free space of remote computer
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$disk = Get-WmiObject Win32_LogicalDisk -ComputerNam>me m> remotecomputer -Filter "DeviceID='C:'" |
Select-Object Size,FreeSpace
$disk.Size
$disk.FreeSpace
To extract the values only and assign them to a variable:
$disk = Get-WmiObject Win32_LogicalDisk -ComputerNam>me m> remotecom...
How to get a cross-origin resource sharing (CORS) post request working
...l CORS requests. jQuery 1.5.2 does not do this. Also, according to the sam>me m> question, setting a server response header of
Access-Control-Allow-Headers: *
does not allow the response to continue. You need to ensure the response header specifically includes the required headers. ie:
Access-C...
Update a record without first querying?
...
You should use the Attach() m>me m>thod.
Attaching and Detaching Objects
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spring boot default H2 jdbc connection (and H2 console)
...o suggest this is the best way to do it.
In my case, I chose a specific nam>me m> for the database so that I would have som>me m>thing to enter when starting the H2 console (in this case, "AZ"). I think all of these are required though it seems like leaving out the spring.jpa.database-platform does not hurt ...
boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that m>me m>mory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implem>me m>ntation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...
Create singleton using GCD's dispatch_once in Objective-C
...er be 1 of these objects), but as long as you only use the [Foo sharedFoo] m>me m>thod to access the object, this is good enough.
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