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python-pandas and databases like mysql
...ndas as pd
import cx_Oracle
ora_conn = cx_Oracle.connect('your_connection_string')
df_ora = pd.read_sql('select * from user_objects', con=ora_conn)
print 'loaded dataframe from Oracle. # Records: ', len(df_ora)
ora_conn.close()
And here is the equivalent example for MySQLdb:
import MySQLdb
m...
How to check if the string is empty?
Does Python have something like an empty string variable where you can do:
25 Answers
...
Passing references to pointers in C++
...
Your function expects a reference to an actual string pointer in the calling scope, not an anonymous string pointer. Thus:
string s;
string* _s = &s;
myfunc(_s);
should compile just fine.
However, this is only useful if you intend to modify the pointer you pass to...
SublimeText encloses lines in white rectangles
...fore </array> tag:
<dict>
<key>name</key>
<string>anaconda Error Outline</string>
<key>scope</key>
<string>anaconda.outline.illegal</string>
<key>settings</key>
<dict>
<key>background</key>
...
Casting to string in JavaScript
I found three ways to cast a variable to String in JavaScript.
I searched for those three options in the jQuery source code, and they are all in use .
I would like to know if there are any differences between them:
...
How to initialise a string from NSData in Swift
I have been trying to initialise a string from NSData in Swift.
7 Answers
7
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What is the correct way to make a custom .NET Exception serializable?
... {
}
public SerializableExceptionWithoutCustomProperties(string message)
: base(message)
{
}
public SerializableExceptionWithoutCustomProperties(string message, Exception innerException)
: base(message, innerException)
{
...
Can I “multiply” a string (in C#)?
Suppose I have a string, for example,
13 Answers
13
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Find which commit is currently checked out in Git
...iece of information, you can get that using git show with the --format=<string> option...and ask it not to give you the diff with --no-patch. This means you can get a printf-style output of whatever you want, which might often be a single field.
For instance, to get just the shortened hash (...
Encrypting & Decrypting a String in C# [duplicate]
... the kind of thing you're after, a simple single method call to allow some string-based plaintext to be encrypted with a string-based password, with the resulting encrypted string also being represented as a string. Of course, there's an equivalent method to decrypt the encrypted string with the sa...