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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...y ways to do this. This answer starts with what is quickly becoming the standard method, but also includes older methods and various other methods from answers to similar questions scattered around this site.
tmp <- data.frame(x=gl(2,3, labels=letters[24:25]),
y=gl(3,1,6, labe...
Android set height and width of Custom view programmatically
...method to measure the view more precisely depending on the space available and layout constraints (wrap_content, match_parent, or a fixed size).
You can find an example on how to override onMeasure() by looking at the android docs and the LabelView sample in your SDK directory.
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Read text file into string array (and write)
The ability to read (and write) a text file into and out of a string array is I believe a fairly common requirement. It is also quite useful when starting with a language removing the need initially to access a database. Does one exist in Golang?
e.g.
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Print a list in reverse order with range()?
... may be less intuitive but as the comments mention, this is more efficient and the right usage of range for reversed list.
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How to debug an apache virtual host configuration?
...ck configuration files for syntax errors:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -t
# Debian-based (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Debian-based (Ubuntu)
apac...
Avoid web.config inheritance in child web application using inheritInChildApplications
...there are some that instead require a <remove name="..."> directive, and still others don't seem to support either. In these situations, it's probably appropriate to set inheritInChildApplications="false".
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Xcode 4 - detach the console/log window
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Go to Xcode preferences, and open the Behavior tab.
Tell Xcode to open a tab called "Debugger" when "Run Pauses" or "Run Starts". Then run it, and break that Debugging tab out into another window (drag it off the tab bar into its own window by just...
Putting uncommitted changes at Master to a new branch by Git
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You can just checkout to the test branch and then commit. You don't lose your uncommited changes when moving to another branch.
Supposing you are at the master branch:
git checkout test
git add .
git add deletedFile1
git add deletedFile2
...
git commit -m "My Cust...
Best way to read a large file into a byte array in C#?
...lBytes throws OutOfMemoryException with big files (tested with 630 MB file and it failed)
– sakito
Mar 13 '13 at 1:31
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Get the full URL in PHP
...oted string syntax is perfectly correct)
If you want to support both HTTP and HTTPS, you can use
$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
Editor's note: using this code has security implica...