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Creating a singleton in Python
...lass itself is a a function, not a class, so you cannot call class methods from it."
Python 2 and 3 Compatible Version
Writing something that works in both Python2 and 3 requires using a slightly more complicated scheme. Since metaclasses are usually subclasses of type type, it's possible to use one...
What is the maximum possible length of a .NET string?
...onsider one of the stream-based classes especially, if your data is coming from a file.
The problem with s += "stuff" is that it has to allocate a completely new area to hold the data and then copy all of the old data to it plus the new stuff - EACH AND EVERY LOOP ITERATION. So, adding five bytes t...
“The remote certificate is invalid according to the validation procedure.” using Gmail SMTP server
...had the exact same problem and figured out that by default the Mail Shield from Avast antivirus had the "Scan SSL connection" activated. Make sure to turn that off.
From my knowledge, Avast will "open" the mail, scan it for any viruses and then sign it using it's own certificate so the mail won't b...
How to pass a function as a parameter in Java? [duplicate]
...lambda expressions:
obj.aMethod(i -> i == 982);
Here is an excerpt from the Java tutorial on Lambda Expressions:
Syntax of Lambda Expressions
A lambda expression consists of the following:
A comma-separated list of formal parameters enclosed in parentheses. The CheckPerson.t...
To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...rivers:
// This manually deregisters JDBC driver, which prevents Tomcat 7 from complaining about memory leaks wrto this class
Enumeration<Driver> drivers = DriverManager.getDrivers();
while (drivers.hasMoreElements()) {
Driver driver = drivers.nextElement();
try {
DriverManage...
Is mathematics necessary for programming? [closed]
...inst that. He said that programmers need only basic mathematical knowledge from high school or fresh year college math, no more no less, and that almost all of programming tasks can be achieved without even need for advanced math. He argued, however, that algorithms are fundamental & must-have asset...
Why are local variables not initialized in Java?
... warning is an awesome multi-path bad programmer checker that has saved me from doing stupid stuff since it checks every path and makes sure that if you used the variable in some path then you had to initialize it in every path that lead up to it. I now never explicitly initialize variables until I...
jQuery load more data on scroll
...ocument).height() - $(window).height()) {
// ajax call get data from server and append to the div
}
});
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Python Graph Library [closed]
...rhead of a dict of size V + E)
If you want a feature comparison, see this from the Networkx-discuss list
Feature comparison thread
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Getting java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory exception
...
I have also faced the same issues, to fix, download the jar files from the below url
http://commons.apache.org/logging/download_logging.cgi
and copy to your lib folder, will resolve your issue.
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