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Difference between `constexpr` and `const`
...m; }
private:
double re;
double im;
};
constexpr complex COMP(0.0, 1.0); // creates a literal complex
double x = 1.0;
constexpr complex cx1(x, 0); // error: x is not a constant expression
const complex cx2(x, 1); // OK: runtime initialization
constexpr d...
How to initialise a string from NSData in Swift
...aString = String(data: fooData, encoding: NSUTF8StringEncoding)
in Swift 1.0:
var dataString = NSString(data: fooData, encoding:NSUTF8StringEncoding)
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Using HTML and Local Images Within UIWebView
... use base64 image string.
NSData* data = UIImageJPEGRepresentation(image, 1.0f);
NSString *strEncoded = [data base64Encoding];
<img src='data:image/png;base64,%@ '/>,strEncoded
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Making an iframe responsive
...;
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<style>
html body {width: 100%;height: 100%;padding: 0px;margin: 0px;overflow: hidden;font-family: arial;font-size: 10px;color: #6e6e6e;background-color: #000;} #preview-frame {width: 100%;backgroun...
Android adb not found
...owever the following packages replace it:
lib32z1 lib32ncurses5 lib32bz2-1.0
Then the above code works for me.
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Disable EditText blinking cursor
...
simple add this line into your parent layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="matc...
Custom HTTP headers : naming conventions
...headers is defined in the HTTP specification. I'm going to talk about HTTP 1.1, for which the specification is RFC 2616. In section 4.2, 'Message Headers', the general structure of a header is defined:
message-header = field-name ":" [ field-value ]
field-name = token
field-value = ...
Pretty Printing a pandas dataframe
...
pandas >= 1.0
If you want an inbuilt function to dump your data into some github markdown, you now have one. Take a look at to_markdown:
df = pd.DataFrame({"A": [1, 2, 3], "B": [1, 2, 3]}, index=['a', 'a', 'b'])
print(df.to_markdow...
frequent issues arising in android view, Error parsing XML: unbound prefix
...e. You also see this error with an incorrect namespace.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dip">
will...
How to tell if a browser is in “quirks” mode?
...mple,
<!-- Comment -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
will force quirks mode in IE 6 & 7 despite not really being an error (they just throw a total wobbly when the very first line of the file is not a ...