Ever wanted to call a multicast delegate but you want the entire invokation list to be called even if an exception occurs in any in the chain. Then you are in luck, I have created an extension method that does just that, throwing an AggregateException only after execution of the entire list complete...
Who says you cannot throw multiple exceptions in one method. If you are not used to playing around with AggregateExceptions you may be tempted to create your own data-structure to represent many things going wrong. There are of course were another data-structure that is not an exception would be mor...
SkipWhile() is used to exclude elements until first non-match (this might be counter intuitive to most)
int[] list = { 42, 42, 6, 6, 6, 42 };
var result = list.SkipWhile(i => i == 42);
// Result: 6, 6, 6, 42
$ react-native -v
Example Output
react-native-cli: 0.2.0
react-native: n/a - not inside a React Native project directory //Output from different folder
react-native: react-native: 0.30.0 // Output from the react native project directory
Pass an open file object from Python to C extension code.
You can convert the file to an integer file descriptor using PyObject_AsFileDescriptor function:
PyObject *fobj;
int fd = PyObject_AsFileDescriptor(fobj);
if (fd < 0){
return NULL;
}
To convert an integer file descriptor back ...
if true do
"Will be seen since condition is true."
end
if false do
"Won't be seen since condition is false."
else
"Will be seen.
end
unless false do
"Will be seen."
end
unless true do
"Won't be seen."
else
...
The &AUX keyword can be used to define local variables for the function. They are not parameters; the user cannot supply them.
&AUX variables are seldomly used. You can always use LET instead, or some other way of defining local variables in the function body.
&AUX variables have the a...
To access a member of a class, you need to have a "handle" to the particular instance, as either the instance itself, or a pointer or reference to it. Given a class instance, you can point to various of its members with a pointer-to-member, IF you get the syntax correct! Of course, the poi...
A static member variable is just like an ordinary C/C++ variable, except with scope:
It is inside a class, so it needs its name decorated with the class name;
It has accessibility, with public, protected or private.
So, if you have access to the static member variable and decorate it correctl...
Using the mmap module allows the user to randomly access locations in a file by mapping the file into memory. This is an alternative to using normal file operations.
import mmap
with open('filename.ext', 'r') as fd:
# 0: map the whole file
mm = mmap.mmap(fd.fileno(), 0)
# print ...
If you are familiar with jQuery and Sizzle syntax, d3 selections should not be much different. d3 mimics the W3C Selectors API to make interacting with elements easier.
For a basic example, to select all <p> and add a change to each of them:
d3.selectAll('p')
.attr('class','textClass')
...
Signals and slots are used for communication between objects. The signals and slots mechanism is a central feature of Qt and probably the part that differs most from the features provided by other frameworks.
The minimal example requires a class with one signal, one slot and one connection:
counte...
From ES5.1 onwards, you can use the native method Array.prototype.filter to loop through an array and leave only entries that pass a given callback function.
In the following example, our callback checks if the given value occurs in the array. If it does, it is a duplicate and will not be copied to...
var arr = [1, 2, 3, 4];
Method 1
Creates a new array and overwrites the existing array reference with a new one.
arr = [];
Care must be taken as this does not remove any items from the original array. The array may have been closed over when passed to a function. The array will remain in mem...
This query will return all COLUMNS and their associated TABLES for a given column name. It is designed to show you what tables (unknown) contain a specified column (known)
SELECT
c.name AS ColName,
t.name AS TableName
FROM
sys.columns c
JOIN sys.tables t ON c.object_id = t.o...
The easiest way to get started with Gremlin is to install the Gremlin Console. The Gremlin Console is a REPL that allows immediate feedback on the results of Gremlin traversals.
As a prerequisite, Java 8 is required for the Gremlin Console to run. Ensure that it is installed prior to moving forward...
PropertyPossible Valuesdisplaygrid / inline-grid
The CSS Grid is defined as a display property. It applies to a parent element and its immediate children only.
Consider the following markup:
<section class="container">
<div class="item1">item1</div>
<...
The border-style property sets the style of an element's border.
This property can have from one to four values (for every side of the element one value.)
Examples:
border-style: dotted;
border-style: dotted solid double dashed;
border-style can also have the values none and hidden. They ...
Drupal Console
The new CLI for Drupal. A tool to generate boilerplate code, interact with and debug Drupal.
First, we need to install Drupal Console.
Drupal Console is needed not only for this time, but for future installations.
# Run this in your terminal to get the latest project version:
cur...
<PROJECT_ROOT>\app\build.gradle is specific for app module.
<PROJECT_ROOT>\build.gradle is a "Top-level build file" where you can add configuration options common to all sub-projects/modules.
If you use another module in your project, as a local library you would have another...
