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What is ?= in Makefile
... not set/doesn't have a value.
For example:
KDIR ?= "foo"
KDIR ?= "bar"
test:
echo $(KDIR)
Would print "foo"
GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html
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Is it possible to allow didSet to be called during initialization in Swift?
...ffer from self.someProperty = newValue in the init? Have you got a working test case?
– mmmmmm
Aug 10 '14 at 17:12
2
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Is there a CSS parent selector?
...h the :has() pseudo everybody has come to know and love from jQuery. The latest ED has removed all references to the subject indicator, and replaced it with the :has() pseudo. I don't know the exact reasons, but the CSSWG held a poll some time ago and the results must have influenced this decision. ...
iphone/ipad: How exactly use NSAttributedString?
...str = [[NSMutableAttributedString alloc] initWithString:@"Hello. That is a test attributed string."];
[str addAttribute:NSBackgroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(3,5)];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(10...
.NET: Simplest way to send POST with data and read response
...me", "admin"),
new KeyValuePair<string, string>("password", "test@123")
};
var content = new FormUrlEncodedContent(pairs);
var response = client.PostAsync("youruri", content).Result;
if (response.IsSuccessStatusCode)
{
}
...
Git asks for username every time I push
...
@testerjoe2 try git config --unset credential.helper
– dk14
Oct 22 '16 at 7:19
1
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How can I add a help method to a shell script?
...always be the first option ($1) then the simplest solution is an if with a test ([). For example:
if [ "$1" == "-h" ] ; then
echo "Usage: `basename $0` [-h]"
exit 0
fi
Note that for posix compatibility = will work as well as ==.
Why quote $1?
The reason the $1 needs to be enclosed in qu...
NumPy or Pandas: Keeping array type as integer while having a NaN value
... in every reasonable place checking that the two are in sync. After enough testing you can let go of the floats.
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Replacements for switch statement in Python?
...ly as leaving off the break statement, but you can have a more complicated test. Its formatting is nicer than a series of nested ifs, even though functionally that's what it is closer to.
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im...
How to create a JavaScript callback for knowing when an image is loaded?
... setTimeout(function(){
logo.src = 'https://edmullen.net/test/rc.jpg';
}, 5000);
};
<html>
<head>
<title>Image onload()</title>
</head>
<body>
<img src="#" alt="This image is going to load" i...