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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... yet again by Jerry Schwarz for Cfront 2.0, using the idea of manipulators from Andrew Koenig. The standard version of the library is based on this implementation.
Source "The Design & Evolution of C++", section 8.3.1.
...
How do I automatically update a timestamp in PostgreSQL
...mp, only if the values changed
Based on E.J's link and add a if statement from this link (https://stackoverflow.com/a/3084254/1526023)
CREATE OR REPLACE FUNCTION update_modified_column()
RETURNS TRIGGER AS $$
BEGIN
IF row(NEW.*) IS DISTINCT FROM row(OLD.*) THEN
NEW.modified = now();
...
When should I use jQuery's document.ready function?
...an img etc), you will not be able to access it because html is interpreted from top to bottom and your html elements are not present when your jQuery code runs.
To overcome this problem, we place every jQuery/javascript code (which uses DOM) inside $(document).ready function which gets called when ...
How to make a element expand or contract to its parent container?
...document.
Then I save this file as a new SVG file and get the path data from this file.
Now in HTML the code that does the magic is as follows:
<div id="containerId">
<svg
id="svgId"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
versi...
What is the worst real-world macros/pre-processor abuse you've ever come across?
...
From memory, it looked something like this:
#define RETURN(result) return (result);}
int myfunction1(args) {
int x = 0;
// do something
RETURN(x)
int myfunction2(args) {
int y = 0;
// do something
R...
How to read an external local JSON file in JavaScript?
...pe="text/javascript" src="javascrip.js"></script>
Get the Object from the json file
var mydata = JSON.parse(data);
alert(mydata[0].name);
alert(mydata[0].age);
alert(mydata[1].name);
alert(mydata[1].age);
For more information, see this reference.
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Can I define a class name on paragraph using Markdown?
... a workaround:
<DIV class=foo>
Paragraphs here inherit class foo from above.
</div>
The downside of this is that the output code has <p> tags wrapping the <div> lines (both of them, the first because it's not and the second because it doesn't match. No browser fusses...
what’s the difference between Expires and Cache-Control headers?
...
Cache-Control was defined in HTTP/1.1, tells all caching mechanisms from server to client whether they may cache this object. It is measured in seconds: Cache-Control: max-age=3600.
The Expires header field gives the date/time after which the response is considered stale. The Expires value ...
Python Pandas Error tokenizing data
...ader of the file. It reads the first row and infers the number of columns from that row. But the first two rows aren't representative of the actual data in the file.
Try it with data = pd.read_csv(path, skiprows=2)
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How to group dataframe rows into list in pandas groupby?
...B [5, 5, 4] [3, 4, 4]
C [6] [4]
This answer was inspired from Anamika Modi's answer. Thank you!
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