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Difference between is and as keyword
... if an object can be cast to a specific type.
Example:
if (someObject is StringBuilder) ...
as
The as operator attempts to cast an object to a specific type, and returns null if it fails.
Example:
StringBuilder b = someObject as StringBuilder;
if (b != null) ...
Also related:
Casting
...
Opening port 80 EC2 Amazon web services [closed]
...to the "Network & Security" -> Security Group settings in the left hand navigation
Find the Security Group that your instance is apart of
Click on Inbound Rules
Use the drop down and add HTTP (port 80)
Click Apply and enjoy
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Upload files with HTTPWebrequest (multipart/form-data)
...request stream. Here is the result:
public static void HttpUploadFile(string url, string file, string paramName, string contentType, NameValueCollection nvc) {
log.Debug(string.Format("Uploading {0} to {1}", file, url));
string boundary = "---------------------------" + DateTime...
Efficient string concatenation in C++
I heard a few people expressing worries about "+" operator in std::string and various workarounds to speed up concatenation. Are any of these really necessary? If so, what is the best way to concatenate strings in C++?
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How to use SCNetworkReachability in Swift
...address", or use SCNetworkReachabilityCreateWithName() with a host name as string. But note that SCNetworkReachability only checks that a packet sent to that address can leave the local device. It does not guarantee that the data packet will actually be received by the host.
– ...
Is there a way to provide named parameters in a function call in JavaScript?
...se to what you want, but it is based on the output of Function.prototype.toString [ES5], which is implementation dependent to some degree, so it might not be cross-browser compatible.
The idea is to parse the parameter names from the string representation of the function so that you can associate t...
How to initialize a List to a given size (as opposed to capacity)?
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List<string> L = new List<string> ( new string[10] );
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Recursively add the entire folder to a repository
I am trying to add a branch to the master branch on GitHub and push a folder onto that branch.
15 Answers
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launch sms application with an intent
..._INT >= Build.VERSION_CODES.KITKAT) // At least KitKat
{
String defaultSmsPackageName = Telephony.Sms.getDefaultSmsPackage(this); // Need to change the build to API 19
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("text/plain");
...
JSON.stringify without quotes on properties?
...most cases:
const object = { name: 'John Smith' };
const json = JSON.stringify(object); // {"name":"John Smith"}
console.log(json);
const unquoted = json.replace(/"([^"]+)":/g, '$1:');
console.log(unquoted); // {name:"John Smith"}
Extreme case:
var json = '{ "name": "J\\":ohn Smit...