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When should I use double instead of decimal?
...think you've summarised the advantages quite well. You are however missing one point. The decimal type is only more accurate at representing base 10 numbers (e.g. those used in currency/financial calculations). In general, the double type is going to offer at least as great precision (someone corre...
Reverting a single file to a previous version in git [duplicate]
...its, five of which changed a given file, and we want to revert the file to one of the previous versions. First of all, git doesn't keep version numbers for individual files. It just tracks content - a commit is essentially a snapshot of the work tree, along with some metadata (e.g. commit message). ...
Difference between 'struct' and 'typedef struct' in C++?
... In C, the struct tags, union tags and enumeration tags share one namespace, rather than (struct and union) using two as claimed above; the namespace referenced for typedef names is indeed separate. That means you can't have both 'union x { ... };' and 'struct x { ... };' in a single s...
How does PHP 'foreach' actually work?
...rm some kind of modification a real copy (called a "duplication") will be done. See You're being lied to for a more extensive introduction on this topic.
PHP 5
Internal array pointer and HashPointer
Arrays in PHP 5 have one dedicated "internal array pointer" (IAP), which properly supports modific...
Control cannot fall through from one case label
...e the following code. But I am getting a "Control cannot fall through from one case label" error.
8 Answers
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Form inside a form, is that alright? [duplicate]
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Though you can have several <form> elements in one HTML page, you cannot nest them.
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Posting a File and Associated Data to a RESTful WebService preferably as JSON
This is probably going to be a stupid question but I'm having one of those nights. In an application I am developing RESTful API and we want the client to send data as JSON. Part of this application requires the client to upload a file (usually an image) as well as information about the image.
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to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
...using drawRect. I'm trying to fully understand the when's and why's to use one over the other.
4 Answers
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Is it good style to explicitly return in Ruby?
...trived example, but imagine having a little function like this, which adds one to the number passed, and assigns it to an instance variable.
def plus_one_to_y(x)
@y = x + 1
end
Was this meant to be a function that returned a value, or not? It's really hard to say what the developer meant, a...
How to send an object from one Android Activity to another using Intents?
..., a simple example for how to implement is:
// simple class that just has one member property as an example
public class MyParcelable implements Parcelable {
private int mData;
/* everything below here is for implementing Parcelable */
// 99.9% of the time you can just ignore this
...