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What does 'wb' <em>mem>ean in this code, using Python?
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File <em>mem>ode, write and binary. Since you are writing a .jpg file, it looks fine.
But if you supposed to read that jpg file you need to use 'rb'
<em>Mem>ore info
On Windows, 'b' appended to the <em>mem>ode
opens the file in binary <em>mem>ode, s...
Rails “validates_uniqueness_of” Case Sensitivity
Here is the <em>mem>odel (I a<em>mem> using SQLLite3):
4 Answers
4
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Difference between Docu<em>mem>ent-based and Key/Value-based databases?
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The <em>mem>ain differences are the data <em>mem>odel and the querying capabilities.
Key-value stores
The first type is very si<em>mem>ple and probably doesn't need any further explanation.
Data <em>mem>odel: <em>mem>ore than key-value stores
Although there is...
What does Ht<em>mem>l.HiddenFor do?
Although I have read the docu<em>mem>entation on Ht<em>mem>l.HiddenFor, I've not grasped what is it used for...
4 Answers
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Xcode 4 and Core Data: How to enable SQL Debugging
I'<em>mem> working on a universal iOS app and I'd like to see the raw SQL in the logs when I'<em>mem> debugging. There is so<em>mem>e info in this blog post about how to enable raw SQL logging for iOS Core Data develop<em>mem>ent. The given exa<em>mem>ple is for Xcode 3 and it's just not clear to <em>mem>e how to enable this in Xcode 4.
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In Eclipse, can I have <em>mem>ultiple Console views at once, each showing a different Console?
I'<em>mem> working on so<em>mem>e applications that, in debug <em>mem>ode, log to the console. I'd like to run and debug the<em>mem> fro<em>mem> inside of Eclipse, and view the console for each one si<em>mem>ultaneously. However, I have a single Console tab that shows a single Console output at a ti<em>mem>e. Is there a way I can split the console...
How to write a JSON file in C#?
I need to write the following data into a text file using JSON for<em>mem>at in C#. The brackets are i<em>mem>portant for it to be valid JSON for<em>mem>at.
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Search for “does-not-contain” on a DataFra<em>mem>e in pandas
I've done so<em>mem>e searching and can't figure out how to filter a datafra<em>mem>e by df["col"].str.contains(word) , however I'<em>mem> wondering if there is a way to do the reverse: filter a datafra<em>mem>e by that set's co<em>mem>pli<em>mem>ent. eg: to the effect of !(df["col"].str.contains(word)) .
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How to convert a boolean array to an int array
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Nu<em>mem>py arrays have an astype <em>mem>ethod. Just do y.astype(int).
Note that it <em>mem>ight not even be necessary to do this, depending on what you're using the array for. Bool will be autopro<em>mem>oted to int in <em>mem>any cases, so you can add it ...
NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ progra<em>mem><em>mem>ers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that <em>mem>ethod:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)cha...