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How to drop a list of rows from Pandas dataframe?
... Folks, in examples, if you want to be clear, please don't use the same strings for rows and columns. That's fine for those who really know their stuff already. Frustrating for those trying to learn.
– gseattle
Mar 19 '17 at 7:40
...
Installing libv8 gem on OS X 10.9+
...se the --with-system-v8 option.
Using RubyGems:
gem install libv8 [-v YOUR_VERSION] -- --with-system-v8
Using Bundler (in your Gemfile):
bundle config build.libv8 --with-system-v8
Please note that if you intend to run your own V8, you must install both V8 and its headers (found in libv8-dev for ...
How to delete a whole folder and content?
...xternalStorageDirectory()+"Dir_name_here");
if (dir.isDirectory())
{
String[] children = dir.list();
for (int i = 0; i < children.length; i++)
{
new File(dir, children[i]).delete();
}
}
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How do I ZIP a file in C#, using no 3rd-party APIs?
...ar target = Path.GetFullPath(Path.Combine(tempFolderPath, part.Uri.OriginalString.TrimStart('/')));
var targetDir = target.Remove(target.LastIndexOf('\\'));
if (!Directory.Exists(targetDir))
Directory.CreateDirectory(targetDir);
using (Stream...
How do I add a Fragment to an Activity with a programmatically created content view
... @NonNull Fragment fragment,
@NonNull String fragmentTag) {
getSupportFragmentManager()
.beginTransaction()
.add(containerViewId, fragment, fragmentTag)
.disallowAddToBackStack()
.commit();
...
Long list of if statements in Java
...void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populate it with Command instances:
commandMap.put("A", new CommandA());
commandMap.put("B", new CommandB());
then you can replace your if/else if chain with:
commandMap.get(value).exec();
...
Convert Set to List without creating new List
...ccepts a Collection as an argument, and your set is a Collection.
List<String> mainList = new ArrayList<String>();
mainList.addAll(set);
EDIT: as respond to the edit of the question.
It is easy to see that if you want to have a Map with Lists as values, in order to have k different va...
What is the simplest way to get indented XML with line breaks from XmlDocument?
...XmlTextWriter and came up with the following helper method:
static public string Beautify(this XmlDocument doc)
{
StringBuilder sb = new StringBuilder();
XmlWriterSettings settings = new XmlWriterSettings
{
Indent = true,
IndentChars = " ",
NewLineChars = "\r\n"...
JSON, REST, SOAP, WSDL, and SOA: How do they all link together
...ct format is JSON.
imagine that you have the human class :
class Human{
string Name;
string Family;
int Age;
}
and you have some instances from this class :
Human h1 = new Human(){
Name='Saman',
Family='Gholami',
Age=26
}
when you serialize the h1 object to JSON the result is :
[h...
How do I access my SSH public key?
...
cat ~/.ssh/id_rsa.pub or cat ~/.ssh/id_dsa.pub
You can list all the public keys you have by doing:
$ ls ~/.ssh/*.pub
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