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Executing a command stored in a variable from PowerShell
...cmd1
Here is a working example on my machine:
$cmd = "& 'C:\Program Files\7-zip\7z.exe' a -tzip c:\temp\test.zip c:\temp\test.txt"
Invoke-Expression $cmd
iex is an alias for Invoke-Expression so you could do:
iex $cmd1
For a full list :
Visit https://ss64.com/ps/ for more Powershell st...
cmake and libpthread
...
Here is the right anwser:
ADD_EXECUTABLE(your_executable ${source_files})
TARGET_LINK_LIBRARIES( your_executable
pthread
)
equivalent to
-lpthread
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Rails 3.1: Engine vs. Mountable App
...specify anything in parent_app/config/routes.rb. Specifying the gem in Gemfile is enough for the parent app to inherit the models, routes etc. The engine routes are specified as:
# my_engine/config/routes.rb
Rails.application.routes.draw do
# whatever
end
No namespacing of models, contro...
Merging two images in C#/.NET
...er a frame of a video:
Image playbutton;
try
{
playbutton = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
Image frame;
try
{
frame = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
using (frame)
{
using (var bitmap = new Bitmap(w...
'Specified condition “$(PackageAsSingleFile)” evaluates to “” instead of a boolean?
...arting VS usually helps, but when it doesn't - try deleting .user and .suo files, as per this suggestion: https://stackoverflow.com/a/16223645/913845
This does not always work, however if you skip "Preview Deployment" it is less likely to fail.
Probably it's the solution to the entire class of eva...
How can I send an email by Java application using GMail, Yahoo, or Hotmail?
...
First download the JavaMail API and make sure the relevant jar files are in your classpath.
Here's a full working example using GMail.
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
public class Main {
private static String USER_NAME = "*****"; // GMail u...
How to enable C++11/C++0x support in Eclipse CDT?
...ion depends on what kind of project you created:
For project created as: File -> New -> Project -> C/C++ -> C++ Project
Right click on created project and open
Properties -> C/C++ Build -> Settings -> Tool Settings -> GCC C++ Compiler -> Dialect
Put -std=c++11 into t...
how to find host name from IP with out login to the host
...sts. If you're not getting the hostname you expect, be sure you check this file.
DHCP hostnames are queried differently depending on which DHCP server software is used, because (as far as I know) the protocol does not define a method for querying; however, most servers provide some way of doing thi...
Git push results in “Authentication Failed”
...edentials when Git prompted me for user id and password while pushing new files to remote repository. When I ran push command again git did not prompt me for credentials but instead it was only throwing authentication failed error. I realised after reading this answer that git uses credentials stor...
Can I use __init__.py to define global variables?
...package. I've thought that the best place would be in in the __init__.py file of the root package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access that variable from these modules?
...