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Will the base class constructor be automatically called?
...The constructors for each type in the type hierarchy will be called in the order of Most Base -> Most Derived.
So in your particular instance, it calls Person(), and then Customer() in the constructor orders. The reason why you need to sometimes use the base constructor is when the constructors...
Changing MongoDB data store directory
...or CentOS/Fedora) ship with a basic configuration file which is placed in /etc/mongodb.conf, and the MongoDB service reads this when it starts up. You could make your change here.
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Do you put unit tests in same project or another project?
...Doing it this way results in the actual bits being separated for shipping, etc. Additionally, it is fairly trivial to run automated unit testing at this point on all tests in a particular directory.
To summarize, here is the general idea for a daily build and testing and shipping of bits and other...
Correct way to convert size in bytes to KB, MB, GB in JavaScript
...he size in bytes to be converted.
// pUnits: 'si'|'iec' si units means the order of magnitude is 10^3, iec uses 2^10
function prettyNumber(pBytes, pUnits) {
// Handle some special cases
if(pBytes == 0) return '0 Bytes';
if(pBytes == 1) return '1 Byte';
if(pBytes == -1) return '-1 By...
What's the difference between Spring Data's MongoTemplate and MongoRepository?
.... You get very little implemented methods of any great practical value. In order to make it work you run into the Java configuration nonsense which you can spend days and weeks on without much help in the documentation.
Instead, go with the MongoTemplate route and create your own Data access layer...
Difference between Statement and PreparedStatement
...ons to the server is faster. As a rule of thumb network operations are an order of magnitude slower than disk operations which are an order of magnitude slower than in-memory CPU operations. Hence, any reduction in amount of data sent over the network will have a good effect on overall performance...
Seeing escape characters when pressing the arrow keys in python shell
...o move around in the current line or get previous commands (with arrow-up) etc.
23 Answers
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Microsecond timing in JavaScript
...volve looping, you cannot gain access to the value of console.timeEnd() in order to add your timer results together. You can, but it get gets nasty because you have to inject the value of your iterating variable, such as i, and set a condition to detect if the loop is done.
Here is an example becau...
What is the best way to compute trending topics or tags?
... Addition
Normal z-scores as discussed above do not take into account the order of the data and hence the z-score for an observation of '1' or '9' would have the same magnitude against the sequence [1, 1, 1, 1, 9, 9, 9, 9]. Obviously for trend finding, the most current data should have more weight ...
Seeking clarification on apparent contradictions regarding weakly typed languages
...o". If the developer is wrong, then the runtime will throw an exception in order to protect type safety. If the developer wishes to break type safety or memory safety, they can do so by turning off the type safety system by making an "unsafe" block. In an unsafe block you can use pointer magic to tr...