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When to use Cast() and Oftype() in Linq
...y be cast to type x.
Cast - will try to cast all the elements into type x. if some of them are not from this type you will get InvalidCastException
EDIT
for example:
object[] objs = new object[] { "12345", 12 };
objs.Cast<string>().ToArray(); //throws InvalidCastException
objs.OfType<stri...
EProgrammerNotFound exception in Delphi?
...rs with a similar message. Internally we've always joked and poked fun at different things and people (mostly on the team itself). If you don't have a sense of humor, you're destined to an early grave.
It was a simple conversation;
"Oh, you should have raised the EProgrammerNotFound exception in ...
How to set a default entity property value with Hibernate
...
If you want a real database default value, use columnDefinition:
@Column(name = "myColumn", nullable = false, columnDefinition = "int default 100")
Notice that the string in columnDefinition is database dependent. Also if...
How to tell if a file is git tracked (by shell exit code)?
Is there a way to tell if a file is being tracked by running some git command and checking its exit code?
8 Answers
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Confused about Service vs Factory
...re is only one instance of a given service per injector.
Basically the difference between the service and factory is as follows:
app.service('myService', function() {
// service is just a constructor function
// that will be called with 'new'
this.sayHello = function(name) {
return ...
Show space, tab, CRLF characters in editor of Visual Studio
...
I accidentally enabled this. You saved my life! ^^
– displayname
Jul 15 '13 at 15:48
24
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Get current folder path
...irectory.GetCurrentDirectory() in your case, as the current directory may differ from the execution folder, especially when you execute the program through a shortcut.
It's better to use Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); for your purpose. This returns the pathname whe...
Generating file to download with Django
...ontent-Disposition'] = 'attachment; filename=myfile.zip'
return response
If you don't want the file on disk you need to use StringIO
import cStringIO as StringIO
myfile = StringIO.StringIO()
while not_finished:
# generate chunk
myfile.write(chunk)
Optionally you can set Content-Length ...
How to print out the method name and line number and conditionally disable NSLog?
...
Here are some useful macros around NSLog I use a lot:
#ifdef DEBUG
# define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
# define DLog(...)
#endif
// ALog always displays output regardless of the DEBUG setting
#define ALog(...
Twig for loop for arrays with keys
...
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