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Getting a 'source: not found' error when using source in a bash script
...
In the POSIX standard, which /bin/sh is supposed to respect, the command is . (a single dot), not source. The source command is a csh-ism that has been pulled into bash.
Try
. $env_name/bin/activate
Or if you must have non-POSIX bash-is...
Arduino101 引脚 · App Inventor 2 中文网
...ether the pin
is digital or analog. For digital pins, a 0 indicates LOW and 1 indicates HIGH.
For analog, an integer in the range of [0, 1023] will be returned.
PinStateWritten – 当引脚被写入后，将运行PinStateWritten事件以指示操作成功。value参数将指示从App I...
What are the benefits to marking a field as `readonly` in C#?
...instance, there is no danger of passing an immutable structure to another random portion of code. They can't changed it ever so you can program reliably against that structure.
Here is a good entry about one of the benefits of immutability: Threading
...
Margin-Top not working for span element?
...erties specify the width of the margin area of a box. The
'margin' shorthand property sets the margin for all four sides while
the other margin properties only set their respective side. These
properties apply to all elements, but vertical margins will not have
any effect on non-replaced inl...
How to make my layout able to scroll down?
...View:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- Here you put the rest of your current view-->
</ScrollView>
As David H...
CSS background image to fit width, height should auto-scale in proportion
...e can set length values, it's usually used with the special values contain and cover. In your specific case, you should use cover:
body {
background-image: url(images/background.svg);
background-size: cover; /* <------ */
background-repeat: no-repeat;
...
How can I use Bash syntax in Makefile targets?
...sed as the shell.
So put SHELL := /bin/bash at the top of your makefile, and you should be good to go.
BTW: You can also do this for one target, at least for GNU Make. Each target can have its own variable assignments, like this:
all: a b
a:
@echo "a is $$0"
b: SHELL:=/bin/bash # HERE: t...
Checking if form has been submitted - PHP
... comments, this method won't work for in some cases (e.g. with check boxes and button without a name). You really should use:
if ($_SERVER['REQUEST_METHOD'] == 'POST')
share
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improve this answer
...
How to import a Python class that is in a directory above?
... if your real need is as you expressed it, exclusively tied to directories and without any necessary relationship to packaging -- then you need to work on __file__ to find out the parent directory (a couple of os.path.dirname calls will do;-), then (if that directory is not already on sys.path) prep...
How to mock the Request on Controller in ASP.Net MVC?
...estBase>();
// Not working - IsAjaxRequest() is static extension method and cannot be mocked
// request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */);
// use this
request.SetupGet(x => x.Headers).Returns(
new System.Net.WebHeaderCollection {
{"X-Requested-With", "XM...