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What are the uses of “using” in C#?
...
Things like this:
using (var conn = new SqlConnection("connection string"))
{
conn.Open();
// Execute SQL statement here on the connection you created
}
This SqlConnection will be closed without needing to explicitly call the .Close() function, and this will happen even if an exce...
Deserializing JSON to .NET object using Newtonsoft (or LINQ to JSON maybe?)
...T's LINQ to JSON JObject class. For example:
JToken token = JObject.Parse(stringFullOfJson);
int page = (int)token.SelectToken("page");
int totalPages = (int)token.SelectToken("total_pages");
I like this approach because you don't need to fully deserialize the JSON object. This comes in handy wi...
How to print to console when using Qt
...t useful:
#include <QTextStream>
QTextStream out(stdout);
foreach(QString x, strings)
out << x << endl;
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NTFS performance and large volumes of files and directories
...erformance(int numFilesInDir, bool testDirs) {
var files = new List<string>();
var dir = Path.GetTempPath() + "\\Sub\\" + Guid.NewGuid() + "\\";
Directory.CreateDirectory(dir);
Console.WriteLine("prepare...");
const string FILE_NAME = "\\file.txt";
for (int i = 0; i <...
Can Retrofit with OKHttp use cache data when offline
...che != null) {
okHttpClient.setCache(cache);
}
String hostURL = context.getString(R.string.host_url);
api = new RestAdapter.Builder()
.setEndpoint(hostURL)
.setClient(new OkClient(okHttpClient))
.setRequestIntercept...
Change default primary key in Eloquent
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If you are wanting to use a composite key (a string)
You need to make sure you set public $incrementing = false otherwise laravel will cast the field to an Integer, giving 0
class User extends Model {
protected $primaryKey = 'my_string_key';
public $increment...
What XML parser should I use in C++? [closed]
... text (usually). The way RapidXML gets most of its speed is by refering to strings in-place. This requires more memory management on your part (you must keep that string alive while RapidXML is looking at it).
RapidXML's DOM is bare-bones. You can get string values for things. You can search for att...
How to read data from a zip file without having to unzip the entire file
...ize", "Ratio", "Packed", "pw?");
System.Console.WriteLine(new System.String('-', 72));
header = false;
}
System.Console.WriteLine("{1,-22} {2,8} {3,5:F0}% {4,8} {5,3} {0}",
e.FileName,
e.LastModified.ToString("yyyy-MM-d...
How to print full stack trace in exception?
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I usually use the .ToString() method on exceptions to present the full exception information (including the inner stack trace) in text:
catch (MyCustomException ex)
{
Debug.WriteLine(ex.ToString());
}
Sample output:
ConsoleApplication1.My...
Python: How to create a unique file name?
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uuid seems to create a long unique string. I dont think its better to have file name with long string and UUID, () in it.
– MysticCodes
Jun 3 '10 at 10:37
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