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Is HttpClient safe to use concurrently?
...: github.com/dotnet/corefx/issues/11224.
– Ohad Schneider
Jul 6 '17 at 21:52
1
@OhadSchneider If ...
How to concatenate two IEnumerable into a new IEnumerable?
... first or second be null you would receive a ArgumentNullException. To avoid this & treat nulls as you would an empty set, use the null coalescing operator like so:
var together = (first ?? Enumerable.Empty<string>()).Concat(second ?? Enumerable.Empty<string>()); //amending `<st...
How can I find out if I have Xcode commandline tools installed?
...m the store, and with this new mechanism it can't install extra things outside of the Xcode.app, so you have to manually do it yourself, by:
xcode-select --install
On Xcode 4.x you can check to see if they are installed from within the Xcode
UI:
On Xcode 5.x it is now here:
My problem of f...
Install shows error in console: INSTALL FAILED CONFLICTING PROVIDER
I am experimenting with the NotesList sample program in the Android SDK. I've made a slight variation in the program, but when I install my edited version I keep getting the message INSTALL_FAILED_CONFLICTING_PROVIDER in the console when I try to install it when the original notes program is already...
PG::ConnectionBad - could not connect to server: Connection refused
...
It could be as simple as a stale PID file. It could be failing silently because your computer didn't complete the shutdown process completely which means postgres didn't delete the PID (process id) file.
The PID file is used by postgres to make sure only on...
Get current stack trace in Ruby without raising an exception
...ktrace (stacktrace) in a Rails 3 app without an exception occurring. Any idea how?
3 Answers
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In Python script, how do I set PYTHONPATH?
... answered Jun 24 '10 at 8:28
David ZDavid Z
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Understanding keystore, certificates and alias
...unique alias. In brief:
Keystore entry = private + public key
pair = identified by an alias
The keystore protects each private key with its individual password, and also protects the integrity of the entire keystore with a (possibly different) password.
For instance, when you sign an Androi...
How do I output raw html when using RazorEngine (NOT from MVC)
...oject not to build with MvcBuildViews enabled...
– guidupuy
Oct 22 '13 at 10:07
2
The "HtmlEncode...
How to align a to the middle (horizontally/width) of the page [duplicate]
I have a div tag with width set to 800 pixels . When the browser width is greater than 800 pixels , it shouldn't stretch the div , but it should bring it to the middle of the page.
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