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Is there an expression for an infinite generator?
...
134
for x in iter(int, 1): pass
Two-argument iter = zero-argument callable + sentinel value
int()...
UITapGestureRecognizer tap on self.view but ignore subviews
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145
You should adopt the UIGestureRecognizerDelegate protocol inside the self object and call the b...
Most efficient way to store thousand telephone numbers
... (2^m - 1) * 10 bits. (10 bits is enough for storing a number less than 1024.)
The last k bits of all (reduced) phone numbers are stored contiguously in memory; so if k is, say, 7, then the first 7 bits of this block of memory (bits 0 thru 6) correspond to the last 7 bits of the first (reduced) pho...
Limitations of SQL Server Express
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147
There are a number of limitations, notably:
Constrained to a single CPU (in 2012, this limita...
Reading binary file and looping over each byte
...
Python 2.4 and Earlier
f = open("myfile", "rb")
try:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte ...
Delete everything in a MongoDB database
...ds are added.
– Jason R. Coombs
Aug 4 '16 at 14:50
2
This won't delete the user that is attached ...
jQuery How to Get Element's Margin and Padding?
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edited Sep 14 '11 at 18:04
Dan Short
9,33022 gold badges2626 silver badges5252 bronze badges
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What is JavaScript's highest integer value that a number can go to without losing precision?
...: Number and BigInt.
The most frequently-used number type, Number, is a 64-bit floating point IEEE 754 number.
The largest exact integral value of this type is Number.MAX_SAFE_INTEGER, which is:
253-1, or
+/- 9,007,199,254,740,991, or
nine quadrillion seven trillion one hundred ninety-nine bi...
What command means “do nothing” in a conditional in Bash?
...
BarmarBarmar
548k4444 gold badges346346 silver badges446446 bronze badges
...
How to add leading zeros?
...t's try a harder example of making powers of 10 width 8 too.
anim <- 25499:25504
x <- 10 ^ (0:5)
paste (and it's variant paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but they can be used for that. I...