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Missing return statement in a non-void method compiles
I encountered a situation where a non-void method is missing a return statement and the code still compiles.
I know that the statements after the while loop are unreachable (dead code) and would never be executed. But why doesn't the compiler even warn about returning something? Or why would a...
Is a Java string really immutable?
We all know that String is immutable in Java, but check the following code:
15 Answers
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The provider is not compatible with the version of Oracle client
I'm trying to use the Oracle ODP.NET 11g (11.1.0.6.20) Instant Client on my ASP.net project as a Data Provider but when I run the aspx page I get a " The provider is not compatible with the version of Oracle client " error message. Any help would be appreciated.
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Why is the use of alloca() not considered good practice?
alloca() allocates memory on the stack rather than on the heap, as in the case of malloc() . So, when I return from the routine the memory is freed. So, actually this solves my problem of freeing up dynamically allocated memory. Freeing of memory allocated through malloc() is a major headache an...
Comma in C/C++ macro
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Because angle brackets can also represent (or occur in) the comparison operators <, >, <= and >=, macro expansion can't ignore commas inside angle brackets like it does within parentheses. (This is also a problem for square brackets and braces, even though those u...
Reload Flask app when template file changes
By default, when running Flask application using the built-in server ( Flask.run ), it monitors its Python files and automatically reloads the app if its code changes:
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Is it safe to delete a void pointer?
Suppose I have the following code:
13 Answers
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Find integer index of rows with NaN in pandas dataframe
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For DataFrame df:
import numpy as np
index = df['b'].index[df['b'].apply(np.isnan)]
will give you back the MultiIndex that you can use to index back into df, e.g.:
df['a'].ix[index[0]]
>>> 1.452354
For the integer index:
df_index = df.index.values...
Importing a Maven project into Eclipse from Git
How can I get the effect of choosing to import from both Maven and Git and have Eclipse properly generate my project?
13 A...
Is it worth hashing passwords on the client side
When I want to put a login system in place, I always compare the MD5 of the given password with its value in the users table on the server side.
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