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Forward declaration of nested types/classes in C++
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Thanks for the answer. In my case, they're not my nested classes. I was hoping to avoid a huge library header file dependency with a little forward reference. I wonder if C++11 fixed it?
– Marsh Ray
Nov 7 '11 at ...
How to change a nullable column to not nullable in a Rails migration?
... then you could probably do it like this:
# Make sure no null value exist
MyModel.where(date_column: nil).update_all(date_column: Time.now)
# Change the column to not allow null
change_column :my_models, :date_column, :datetime, null: false
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Reading my own Jar's Manifest
I need to read the Manifest file, which delivered my class, but when I use:
12 Answers
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The Use of Multiple JFrames: Good or Bad Practice? [closed]
... form). For example: 1) I currently use TextPad, and by configuration at my choice, it opens separate instances, that each offer multiple documents shown in a list. 2) Although I'll typically use FF in tabbed mode, occasionally I drag a tab off to a new window. -- The common factor in the exam...
Android studio Gradle build speed up
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After change this settings my compile time 10 mins reduced to 10 secs.
Step 1:
Settings(ctrl+Alt+S) ->
Build,Execution,Deployment ->
Compiler ->
type "--offline" in command-line Options box.
Step 2:
check the “C...
How do I pause my shell script for a second before continuing?
...ly found how to wait for user input. However, I only want to pause so that my while true doesn't crash my computer.
10 A...
Troubleshooting “Illegal mix of collations” error in mysql
...g the below error when trying to do a select through a stored procedure in MySQL.
16 Answers
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[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
... newbie here and trying to send big strings, like 128bytes from the app to my hardware(ESP32).
From the app side I have a text box that is sending the string to ESP32, all working except when I try to send strings over 23bytes. Ok, I read some topics here and tried to apply those solutions but no su...
Where is the Java SDK folder in my computer? Ubuntu 12.04
...mand:
readlink -f $(which java)
It works for me with Ubuntu gnome.
On my computer the result is:
/usr/lib/jvm/java-7-oracle/jre/bin/java
Regards.
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See my work log in jira
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In Jira 7, I get there by going to my project, then Reports on the left, then it's the very last item on the page in my setup.
– Sbodd
Feb 21 '18 at 0:29
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