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Two color borders
... just takes a little CSS trickery!
div.border {
border: 1px solid #000;
position: relative;
}
div.border:before {
position: absolute;
display: block;
content: '';
border: 1px solid red;
height: 100%;
width: 100%;
box-sizing: border-box;
-moz-box-sizing: border-...
Should I use a data.frame or a matrix?
...
@Michal: Matrices aren't really more memory efficient:
m <- matrix(1:400000, 200000, 2)
d <- data.frame(m)
object.size(m)
# 1600200 bytes
object.size(d)
# 1600776 bytes
... unless you have a large number of columns:
m <- matrix(1:400000, 2, 200000)
d <- data.frame(m)
object.size(m)
...
What is the length of the access_token in Facebook OAuth2?
...requires an upper-bound on this. Please give a realistic upperbound. e.g. 1000 characters, 10,000 characters, 1,000,000,000 characters? Having no upper-bound is just unreasonable.
– Yahya Uddin
Feb 7 '17 at 14:36
...
C# - What does the Assert() method do? Is it still useful?
...stem assumes that a customer-information
file will never have more than 50,000 records, the program might
contain an assertion that the number of records is less than or equal
to 50,000. As long as the number of records is less than or equal to
50,000, the assertion will be silent. If it encounters ...
Will console.log reduce JavaScript execution performance?
...lts:
when the browser console is closed, calling console.log is about 10 000 times slower than calling an empty function,
and when the console is open, calling it is as much as 100 000 times slower.
Not that you'll notice the performance lag if you have a reasonable number of console.… calls f...
Whitespace Matching Regex - Java
... /* dummy empty string for homogeneity */
+ "\\u0009" // CHARACTER TABULATION
+ "\\u000A" // LINE FEED (LF)
+ "\\u000B" // LINE TABULATION
+ "\\u000C" // FORM FEED (FF)
+ "\\u00...
Webfonts or Locally loaded fonts?
...well-known fonts in the world available
A really big font library (over 20,000)
Desktop font downloads for making mockups
A custom tool for testing web fonts in the browser
Fine typography controls and subsetting
Self-hosting options
FontSpring
Affiliated with FontSquirrel. Fonts can be purchased...
What's the fastest way to delete a large folder in Windows?
...S uses a 'Schlemeil the Painter' algorithm (joelonsoftware.com/articles/fog0000000319.html) anytime a dir or del is done
– warren
Oct 9 '08 at 11:36
37
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Can you have multiline HTML5 placeholder text in a ?
...ot focused (e.g. by displaying it inside a blank unfocused control). All U+000D CARRIAGE RETURN U+000A LINE FEED character pairs (CRLF) in the hint, as well as all other U+000D CARRIAGE RETURN (CR) and U+000A LINE FEED (LF) characters in the hint, must be treated as line breaks when rendering the hi...
Improve INSERT-per-second performance of SQLite
...formance of a C application can vary from 85 inserts per second to over 96,000 inserts per second!
10 Answers
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