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List of standard lengths for database fields
...irst name.
Email addresses maxed out at 62
characters. Most of the longer ones
were actually lists of email
addresses separated by semicolons.
Street address maxes out at 95
characters. The long ones were all
valid.
Max city length was 35.
This should be a decent statistical spread for people in...
Jump to function definition in vim
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If everything is contained in one file, there's the command gd (as in 'goto definition'), which will take you to the first occurrence in the file of the word under the cursor, which is often the definition.
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R apply function with multiple parameters
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Just pass var2 as an extra argument to one of the apply functions.
mylist <- list(a=1,b=2,c=3)
myfxn <- function(var1,var2){
var1*var2
}
var2 <- 2
sapply(mylist,myfxn,var2=var2)
This passes the same var2 to every call of myfxn. If instead you want ...
How to get image height and width using java?
...way, and you've been cheated out of votes by the same answer posted by someone else 17 days after your post. This should be the top answer not the bottom.
– Oversteer
Jun 25 '12 at 11:07
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Matching a space in regex
I need to match a space character in a PHP regular expression. Anyone got any ideas?
9 Answers
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How to calculate the number of days between two dates? [duplicate]
...
const oneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds
const firstDate = new Date(2008, 1, 12);
const secondDate = new Date(2008, 1, 22);
const diffDays = Math.round(Math.abs((firstDate - secondDate) / oneDay));...
MongoDB and “joins” [duplicate]
... and return them as if they were a single table (you "join two tables into one").
You can read more about DBRef here:
http://docs.mongodb.org/manual/applications/database-references/
There are two possible solutions for resolving references. One is to do it manually, as you have almost described. ...
How can I exclude one word with grep?
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I want to ignore one line above and one line below with matching pattern then How can i achieve it?
– Kanji Viroja
Dec 20 '16 at 10:38
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Single vs double quotes in JSON
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but first one it's single quote in JSON, I am confused. That one can pass compile but the second one can't.
– Bin Chen
Nov 12 '10 at 8:04
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How to diff one file to an arbitrary version in Git?
...iff master~20:pom.xml pom.xml
... to compare your current pom.xml to the one from master 20 revisions ago through the first parent. You can replace master~20, of course, with the object name (SHA1sum) of a commit or any of the many other ways of specifying a revision.
Note that this is actually ...