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NSDictionary - Need to check whether dictionary contains key-value pair or not
...UInteger mCount = [xyz count];. Both of these answers are documented well and easily found in the NSDictionary class reference ([1] [2]).
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Problems with entering Git commit message with Vim
... file before closing it, while ZZ, :xEnter, :xiEnter, :xitEnter, :exiEnter and :exitEnter only write it if the document is modified.
All these synonyms just have different numbers of keypresses.
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Make a URL-encoded POST request using `http.NewRequest(…)`
... create a request. For this POST request I append my data query to the URL and leave the body empty, something like this:
1...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
What is the most efficient way to organise the following pandas Dataframe:
4 Answers
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Why JavaScript rather than a standard browser virtual machine?
...nse to support a set of languages (Java, Python, Ruby, etc.) by way of a standardized virtual machine hosted in the browser rather than requiring the use of a specialized language -- really, a specialized paradigm -- for client scripting only?
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Returning a value from thread?
...losures. Create a variable that will hold the return value from the thread and then capture it in a lambda expression. Assign the "return" value to this variable from the worker thread and then once that thread ends you can use it from the parent thread.
void Main()
{
object value = null; // Used...
How to execute shell command in Javascript
...ant to write a JavaScript function which will execute the system shell commands ( ls for example) and return the value.
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Register Application class in Manifest?
... from Application, add the fully qualified (namespace + class name) as the android:name parameter of the application element in your manifest.
<application
android:name="com.you.yourapp.ApplicationEx"
Or if the class' package can be described as relative to the package in the manifest ...
XPath: How to select nodes which have no attributes?
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To address Marek Czaplicki's comment and expand the answer
//node[not(@*) or not(string-length(@*))]
....will select all node elements with zero attributes OR which have attributes that are all empty. If it was just a particular attribute you are interested i...
Is there a “do … while” loop in Ruby?
...ere Matz states:
|> Don't use it please. I'm regretting this feature, and I'd like to
|> remove it in the future if it's possible.
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|I'm surprised. What do you regret about it?
Because it's hard for users to tell
begin <code> end while <cond>
works differently from
<...