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Waiting until two async blocks are executed before starting another block
...using GCD, we want to wait until two async blocks are executed and done before moving on to the next steps of execution. What is the best way to do that?
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psql: FATAL: role “postgres” does not exist
...sing homebrew, see the comment from @user3402754 below.
Note that the error message does NOT talk about a missing database, it talks about a missing role. Later in the login process it might also stumble over the missing database.
But the first step is to check the missing role: What is the outpu...
C# 'is' operator performance
I have a program that requires fast performance. Within one of its inner loops, I need to test the type of an object to see whether it inherits from a certain interface.
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Use of an exclamation mark in a Git commit message via the command line
...commit -am 'Nailed it!'
Alternatively, if you need to use double quotes for whatever reason but still want a literal ! then turn off history expansion at the top of your script via set +H
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A good solution for await in try/catch/finally?
I need to call an async method in a catch block before throwing again the exception (with its stack trace) like this :
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How to escape hash character in URL
How to escape the # hash sign (sometimes known as number sign or pound sign) sent in the query string of a URL?
1 Answer
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log4net argument to LogManager.GetLogger
Why do most log4net examples get the logger for a class by doing this:
5 Answers
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Add querystring parameters to link_to
...dding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
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How to run an application as “run as administrator” from the command prompt? [closed]
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Try this:
runas.exe /savecred /user:administrator "%sysdrive%\testScripts\testscript1.ps1"
It saves the password the first time and never asks again. Maybe when you change the administrator password you will be prompted again.
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UIView's frame, bounds, center, origin, when to use what?
UIView has the properties frame , bounds , center , and origin , and they all seem to be interrelated. Most of the time, I deal with frame when setting the position and size of a UIView . I understand that frame is using global coordinate system and bounds is using coordinate of the lo...