Tutorial by Examples: arg

By leveraging some of the member variables in the GridLayout instance, we can change the margins around the layout, and spacing between cells. In this example we set the following: verticalSpacing = 0 - Sets the vertical spacing between cells to 0px. horizontalSpacing = 20 - Sets the horizontal ...

A common mistake is to forget surrounding compound function arguments with parentheses, leading to type errors. # string_of_int 1+1;; Error: This expression has type string but an expression was expected of type int This is because of the precedence. In fact, the above evaluates to # (string...

You can also create a custom target to run when you want to perform a particular task. These are typically executables that you run to do different things. Something that may be of particular use is to run Doxygen to generate documentation for your project. To do this you can do the following in you...

You can also pass arguments with a message to work with. We will use the classed from our previous example and extend them. In the receiving part, right behind the Subscribe method call add the type of the argument you are expecting. Also make sure you also declare the arguments in the handler sign...

import wx class MyFileDropTarget(wx.FileDropTarget): """""" def __init__(self, window): """Constructor""" wx.FileDropTarget.__init__(self) self.window = window def OnDropFiles(self, x, y, f...

import wx class MyTextDropTarget(wx.TextDropTarget): def __init__(self, textctrl): wx.TextDropTarget.__init__(self) self.textctrl = textctrl def OnDropText(self, x, y, text): self.textctrl.WriteText("(%d, %d)\n%s\n" % (x, y, text)) ret...

import wx class MyURLDropTarget(wx.PyDropTarget): def __init__(self, window): wx.PyDropTarget.__init__(self) self.window = window self.data = wx.URLDataObject(); self.SetDataObject(self.data) def OnDragOver(self, x, y, d): return wx....

ArgumentCaptor will to receive the actual invocation arguments that has been passed to method. ArgumentCaptor<Foo> captor = ArgumentCaptor.forClass(Foo.class); verify(mockObj).doSomethind(captor.capture()); Foo invocationArg = captor.getValue(); //do any assertions on invocationArg For ...

In this example 2000 bytes will be transfered using DMA, Transmit Half Complete and Transmit Complete interrupts achieving the best performance. The first half of the transmit buffer is loaded with new data by the CPU in the Transmit Half Complete interrupt callback while the second half of the buf...

To fetch large data we can use generators in pandas and load data in chunks. import pandas as pd from sqlalchemy import create_engine from sqlalchemy.engine.url import URL # sqlalchemy engine engine = create_engine(URL( drivername="mysql" username="user", ...

if len(sys.argv) != 4: # The script name needs to be accounted for as well. raise RuntimeError("expected 3 command line arguments") f = open(sys.argv[1], 'rb') # Use first command line argument. start_line = int(sys.argv[2]) # All arguments come as strings, so need to ...

The splat operator removes individual elements of an array and makes them into a list. This is most commonly used to create a method that accepts a variable number of arguments: # First parameter is the subject and the following parameters are their spouses def print_spouses(person, *spouses) s...

If you want to use a podfile in more than one target, you can do like this. You can choose the download address when you pod this lib. def testpods pod 'YSDPush', :git => 'https://github.com/youshaoduo/YSDPush.git' end target 'One' do testpods end target 'Two' do testpods ...

Suppose you want the user to select keywords from a menu, we can create a script similar to #!/usr/bin/env bash select os in "linux" "windows" "mac" do echo "${os}" break done Explanation: Here select keyword is used to loop through a list ...

OpenCL Kernels can be either executed on the GPU or the CPU. This allows for fallback solutions, where the customer may have a very outdated system. The programmer can also choose to limit their functionality to either the CPU or GPU. To get started using OpenCL, you'll need a 'Context' and a 'Devi...

On 32-bits systems, integers larger than PHP_INT_MAX are automatically converted to float. Outputting these as integer values (i.e. non-scientific notation) can be done with printf, using the float representation, as illustrated below: foreach ([1, 2, 3, 4, 5, 6, 9, 12] as $p) { $i = pow(1024,...

Lets have the following example.bat and call it with arguments 1 ,2 and 3: @echo off ( shift shift echo %1 ) As the variable expansion will change after the the end brackets context is reached the output will be: 1 As this might be an issue when shifting inside brackets ...

PGSQL> SELECT COALESCE(NULL, NULL, 'HELLO WORLD'); coalesce -------- 'HELLO WORLD'

PGSQL> SELECT COALESCE(NULL, NULL, 'first non null', null, null, 'second non null'); coalesce -------- 'first non null'

PGSQL> SELECT COALESCE(NULL, NULL, NULL); coalesce --------