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“:” (colon) in C struct - what does it mean? [duplicate]
...ssigning to the structure looks like:"
struct file_operations fops = {
read: device_read,
write: device_write,
open: device_open,
release: device_release
};
The C99 (old, compatible) way looks like:
struct file_operations fops = {
.read = device_read,
.write = device_write,
...
How to check null objects in jQuery
...
but.. wouldnt you get a "Cannot read property 'length' of null" error?
– Sagive SEO
Mar 25 '18 at 18:14
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Why use getters and setters/accessors?
...ink?) allows you to define properties as 1st class citizens where they can read / write a field directly initially but - should you need it - do so via getter / setter methods as well. Mucho convenient. Java, alas, does not - not to mention the javabeans standard which forces you to use getters / se...
Subset of rows containing NA (missing) values in a chosen column of a data frame
...onvert "NA" strings to NA values, and let "NULL" strings as is).
If using read.table() or read.csv(), you should consider the "na.strings" argument to do clean data import, and always work with real R NA values.
An example, working in both cases "NULL" and "NA" cells :
DF <- read.csv("file.csv...
ViewBag, ViewData and TempData
...
TempData
Basically it's like a DataReader, once read, data will be lost.
Check this Video
Example
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Message = "Welcome to ASP.NET MVC!";
TempData["T"] = "...
How do you build a Singleton in Dart?
...
I don't find it very intuitive reading new Singleton(). You have to read the docs to know that new isn't actually creating a new instance, as it normally would.
Here's another way to do singletons (Basically what Andrew said above).
lib/thing.dart
lib...
How to call Android contacts list?
...here are three steps to this process.
1. Permissions
Add a permission to read contacts data to your application manifest.
<uses-permission android:name="android.permission.READ_CONTACTS"/>
2. Calling the Contact Picker
Within your Activity, create an Intent that asks the system to find a...
JavaScript module pattern with example [closed]
...ction scope always. This means that any variable in outer function will be read always. It will not read the global variable (if any) with the same name. This is also one of the objective of using modular design pattern avoiding naming conflict.
var scope = "I am global";
function whatismyscope() ...
Simple insecure two-way data “obfuscation”?
...We will have to write the unencrypted bytes to the stream,
* then read the encrypted result back from the stream.
*/
#region Write the decrypted value to the encryption stream
CryptoStream cs = new CryptoStream(memoryStream, EncryptorTransform, CryptoStreamMode.Writ...
Best practices: throwing exceptions from properties
...se of a resource which Dispose has made unavailable (e.g. the member would read data from a stream which has been closed) the member should throw ObjectDisposedException rather than leaking e.g. ArgumentException, but if one has a form with properties that represent the values in certain fields, it ...