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What are the pros and cons of performing calculations in sql vs. in your application
...lex work - especially not great for procedural work, but very good for set-based work; lousy error-handling, though)
As always, if you do bring the data back to the app-server, minimising the columns and rows will be to your advantage. Making sure the query is tuned and appropriately indexed will ...
Determine if a String is an Integer in Java [duplicate]
...t look at each element at least once. I suppose we could micro-optimize it based on the radix, but for all intents and purposes this is as good as you can expect to get.
public static boolean isInteger(String s) {
return isInteger(s,10);
}
public static boolean isInteger(String s, int radix) {...
How to list the properties of a JavaScript object?
...ontributor to Prototype, I implemented the workaround for the DontEnum bug based on code for his Object.forIn() function found here.
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Java: Get month Integer from Date
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Note that Calendar.MONTH is for no apparent reasons ZERO based, ie January==0. Now that's documented just fine in the API, but it's still confusing as hell for first time users. I've yet to find anyone who could tell me why they went with that - maybe time for a new SO question mys...
Django dynamic model fields
...age is no longer mantained but has some thriving forks)
This solution is based on Entity Attribute Value data model, essentially, it uses several tables to store dynamic attributes of objects. Great parts about this solution is that it:
uses several pure and simple Django models to represent dyn...
Git and Mercurial - Compare and Contrast
...ing and require explicit pushing.
Branches: In Mercurial basic workflow is based on anonymous heads; Git uses lightweight named branches, and has special kind of branches (remote-tracking branches) that follow branches in remote repository.
Revision naming and ranges: Mercurial provides revision num...
Advantages of Binary Search Trees over Hash Tables
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Remember that Binary Search Trees (reference-based) are memory-efficient. They do not reserve more memory than they need to.
For instance, if a hash function has a range R(h) = 0...100, then you need to allocate an array of 100 (pointers-to) elements, even if you are j...
汇编常用寄存器及指令基础总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...：堆栈指针，与SS配合使用，可指向目前的堆栈位置
BP（Base Pointer）：基址指针寄存器，可用作SS的一个相对基址位置
SI（Source Index）：源变址寄存器可用来存放相对于DS段之源变址指针
DI（Destination Index）：目的变址寄存器，...
Can you use hash navigation without affecting history?
... so it doesn't trigger a page load.... Except when the document contains a base tag: <base href ="http://example.com/" /> If it does contain a base tag, then when you use the replace method with just a leading "#hash_value_here" it actually will be as if you said `location.replace('example.c...
Set Page title using UI-Router
I am migrating my AngularJS based app to use ui-router instead of the built in routing. I have it configured as shown below
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