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Writing a compiler in its own language
... assembler. Eventually, you will come to the place where you have to parse strings, specifically escape sequences. You will write code to convert \n to the character with the decimal code 10 (and \r to 13, etc).
After that compiler is ready, you will start to reimplement it in C. This process is ca...
Compare given date with today
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That format is perfectly appropriate for a standard string comparison e.g.
if ($date1 > $date2){
//Action
}
To get today's date in that format, simply use: date("Y-m-d H:i:s").
So:
$today = date("Y-m-d H:i:s");
$date = "2010-01-21 00:00:00";
if ($date < $today) {...
Setting PayPal return URL and making it auto return?
...--------------------------------------------------------------
$product_id_string = $_POST['custom'];
$product_id_string = rtrim($product_id_string, ","); // remove last comma
// Explode the string, make it an array, then query all the prices out, add them up, and make sure they match the payment_gr...
How do I convert a column of text URLs into active hyperlinks in Excel?
... 200 entries.
NOTE: This solution does not work if the cell A1 contains a string longer than 255 characters. It results in a #VALUE! error
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Getting list of parameter names inside python function [duplicate]
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@BrunoBronosky why not just use f-strings? f'found {thing} in {place}, took {action}, resulting in {result}'
– speedstyle
Jul 20 '19 at 20:05
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Update Git branches from master
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You have two options:
The first is a merge, but this creates an extra commit for the merge.
Checkout each branch:
git checkout b1
Then merge:
git merge origin/master
Then push:
git push origin b1
Alternatively, you can do a rebase:
git fetch
git rebase origin/master
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Hash Map in Python
...text, is dict(key1=value1, key2=value2, ...) but that requires the keys to strings which are also valid Python identifiers (and internally, this also creates a dictionary).
– user395760
Jan 2 '12 at 17:31
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How to bind inverse boolean properties in WPF?
... of effort to separate what they feel is "code" from those poor designers. Extra extra painful when I’m both the coder and the designer.
– Roman Starkov
Apr 14 '12 at 14:48
10
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Twitter Bootstrap 3: how to use media queries?
...re the selectors used in BS4. There is no "lowest" setting in BS4 because "extra small" is the default. I.e. you would first code the XS size and then have these media overrides afterwards.
@media(min-width:576px){}
@media(min-width:768px){}
@media(min-width:992px){}
@media(min-width:1200px){}
Up...
Why does Clojure have “keywords” in addition to “symbols”?
... and global vars...
Keywords are generally used as lightweight "constant strings", e.g. for the keys of a hash-map or the dispatch values of a multimethod. Symbols are generally used to name variable and functions and it's less common to manipulate them as objects directly except in macros and su...