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Virtualbox “port forward” from Guest to Host [closed]
...15 Bcast:10.0.2.255 Mask:255.255.255.0
Go to Vbox instance window -> Menu -> Network adapters:
adapter should be NAT
click on "port forwarding"
insert new record (+ icon)
for host ip enter 127.0.0.1, and for guest ip address you got from prev. step (in my case it is 10.0.2.15)
in your cas...
The cause of “bad magic number” error when loading a workspace and how to avoid it?
...ead of readRDS() (yes, 9 months later, I'm back here for pretty much the same mistake).
– Waldir Leoncio
Nov 13 '14 at 17:35
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
After conducting some experiments on square matrices of different sizes, a pattern came up. Invariably, transposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
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Count number of occurences for each unique value
...mmyData)
# dummyData
# 1 2
# 25 75
## or another presentation of the same data
as.data.frame(table(dummyData))
# dummyData Freq
# 1 1 25
# 2 2 75
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Showing line numbers in IPython/Jupyter Notebooks
...ent notebook versions Shift-L should toggle for all cells.
If you can't remember the shortcut, bring up the command palette Ctrl-Shift+P (Cmd+Shift+P on Mac), and search for "line numbers"), it should allow to toggle and show you the shortcut.
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How to Test a Concern in Rails
... have a Personable concern in my Rails 4 application which has a full_name method, how would I go about testing this using RSpec?
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What is a “first chance exception”?
...es it originate in a .NET program? And why is it called by that peculiar name (what 'chance' are we talking about)?
5 Answe...
What are some better ways to avoid the do-while(0); hack in C++?
... use returns instead of breaks. While all these checks correspond to the same level of abstraction as of the function, it is quite logical approach.
For example:
void foo(...)
{
if (!condition)
{
return;
}
...
if (!other condition)
{
return;
}
...
if (!anothe...
How to ignore user's time zone and force Date() use specific time zone
In an JS app, I receive timestamp (eq. 1270544790922 ) from server (Ajax).
7 Answers
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Find a private field with Reflection?
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Works great - FYI VB.NET version Me.GetType().GetFields(Reflection.BindingFlags.NonPublic Or Reflection.BindingFlags.Instance)
– gg.
May 27 '09 at 7:36
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