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Best ways to teach a beginner to program? [closed]
... helps.
1) FizzBuzz. Start with command line programs. You can write some fun games, or tools, very quickly, and you learn all of the language features very quickly without having to learn the GUI tools first. These early apps should be simple enough that you won't need to use any real debugging to...
How to query nested objects?
...r is a subdocument that contains only the field company with the value 'ABC123' and the field address with the value '123 Street', in the exact order:
db.inventory.find( {
producer: {
company: 'ABC123',
address: '123 Street'
}
});
...
Check if a string contains a number
...RE_D.search(string)
# Output from iPython
# In [18]: %timeit f1('assdfgag123')
# 1000000 loops, best of 3: 1.18 µs per loop
# In [19]: %timeit f2('assdfgag123')
# 1000000 loops, best of 3: 923 ns per loop
# In [20]: %timeit f3('assdfgag123')
# 1000000 loops, best of 3: 384 ns per loop
...
Decimal number regular expression, where digit after decimal is optional
...pace & comments in regular expression)
For example, it will match:
123
23.45
34.
.45
-123
-273.15
-42.
-.45
+516
+9.8
+2.
+.5
And will reject these non-numbers:
. (single decimal point)
-. (negative decimal point)
+. (plus decimal point)
(empty string)
The simpler solutions can incorre...
EProgrammerNotFound exception in Delphi?
...mon errors with a similar message. Internally we've always joked and poked fun at different things and people (mostly on the team itself). If you don't have a sense of humor, you're destined to an early grave.
It was a simple conversation;
"Oh, you should have raised the EProgrammerNotFound excep...
Remove substring from the string
...
ruby is fun! really enjoy seeing stuff like: asdf['bar'] = ''
– Peter Butkovic
Dec 2 '14 at 10:11
...
How did I get a value larger than 8 bits in size from an 8-bit integer?
...th c = c - 1 and the values remained within the range [-128 ... 127]:
c: -123
c: -124
c: -125
c: -126
c: -127
c: -128 // about to overflow
c: 127 // woop
c: 126
c: 125
c: 124
c: 123
c: 122
Freaky ey? I don't know much about what the compiler does to expressions like i++ or i--. It's likely promo...
Block Comments in Clojure
...re!"))
Check me out!
)
Just wrap your comments in (comment ..) :)
Have fun!
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Function to clear the console in R and RStudio
I am wondering if there is a function to clear the console in R and, in particular, RStudio I am looking for a function that I can type into the console, and not a keyboard shortcut.
...
Google Maps V3 - How to calculate the zoom level for a given bounds
... longitude, and then take the smaller (further out) of the two.
Here is a function that uses both latitude and longitude:
function getBoundsZoomLevel(bounds, mapDim) {
var WORLD_DIM = { height: 256, width: 256 };
var ZOOM_MAX = 21;
function latRad(lat) {
var sin = Math.sin(lat...