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How to think in data stores instead of databases?
...nk 100% in object relationships that map directly to table structures, and now it's hard to see anything differently. I can understand some of the benefits of Google Datastore (e.g. performance and the ability to distribute data), but some good database functionality is sacrificed (e.g. joins).
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How can I profile C++ code running on Linux?
... of the time (and thus costs that much). For simplicity, suppose we don't know what f is, but assume it is either 0.1, 0.2, 0.3, ... 0.9, 1.0, and the prior probability of each of these possibilities is 0.1, so all of these costs are equally likely a-priori.
Then suppose we take just 2 stack sample...
Spring boot @ResponseBody doesn't serialize entity id
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And don't forget to support now getter and setter for the id in the entity class!.. (I forgot it and was searching much time for that)
– phil
Apr 21 '16 at 18:12
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Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...n the bindingRedirect since that's what the DLL says. This is what I have now: <Reference Include="Newtonsoft.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> </Referenc...
bash: shortest way to get n-th column of output
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You can go one step further and define D to be:
alias -g D="|xargs rm"
Now you can type:
cat file X1 D
to delete all files mentioned in the first column of file "file".
If you know the bash, the zsh is not much of a change except for some new features.
HTH Chris
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MySQL SELECT only not null values
...uld use IS NOT NULL. (The comparison operators = and <> both give UNKNOWN with NULL on either side of the expression.)
SELECT *
FROM table
WHERE YourColumn IS NOT NULL;
Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not sta...
Uncaught Error: SECURITY_ERR: DOM Exception 18 when I try to set a cookie
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If you are a iOS developer, You might be interested to know that I also experienced this issue while trying to use localStorage after loading the HTML directly into the UIWebView control. stackoverflow.com/questions/11371441/…
– Felipe Sabino
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Is UML practical? [closed]
...carefully about what they're doing, but a professional programmer already knows what they're doing. Most of the time, writing the code itself is quicker and more effective than writing about the code, because their programming intuition is tuned to the task.
It's not just about what you're doing t...
Android Bitmap to Base64 String
...Stream is = new Base64InputStream( new FileInputStream(yourFileHere) );
//Now that we have the InputStream, we can read it and put it into the String
final StringWriter writer = new StringWriter();
IOUtils.copy(is , writer, encoding);
final String yourBase64String = writer.toString();
As you can ...
How do I know that the UICollectionView has been loaded completely?
...UICollectionView's datasource / layout methods should be called. How do I know that?? Is there any delegate method to know UICollectionView loaded status?
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