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How to use php serialize() and unserialize()
...inator" that can be handled by things other than PHP, like databases, text files, sockets. The standard PHP function serialize is just a format to express such a thing, it serializes a data structure into a string representation that's unique to PHP and can be reversed into a PHP object using unseri...
How to determine function name from inside a function
...describe the call stack. For instance, ${FUNCNAME[$i]} was called from the file ${BASH_SOURCE[$i+1]} at line number ${BASH_LINENO[$i]}. The caller builtin displays the current call stack using this information.
When bash arrays are accessed without an index the first element of the array will be re...
Heroku free account limited?
... limited to 300 MB in total. Your application also has access to the local filesystem, which can serve as an ephemeral scratch space for that specific dyno, and should be able to store at least 1 GB of data.
There is a 2TB/month limit on bandwidth.
...
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 $cmd1
For a full list :
Visit https://ss64.com/ps/ for more Powershell st...
Merging two images in C#/.NET
...er a frame of a video:
Image playbutton;
try
{
playbutton = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
Image frame;
try
{
frame = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
using (frame)
{
using (var bitmap = new Bitmap(w...
Rails 3.1: Engine vs. Mountable App
...specify anything in parent_app/config/routes.rb. Specifying the gem in Gemfile is enough for the parent app to inherit the models, routes etc. The engine routes are specified as:
# my_engine/config/routes.rb
Rails.application.routes.draw do
# whatever
end
No namespacing of models, contro...
'Specified condition “$(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...
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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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 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...