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Contains method for a slice
...st, but is trivial to write:
func contains(s []int, e int) bool {
for _, a := range s {
if a == e {
return true
}
}
return false
}
You can use a map if that lookup is an important part of your code, but maps have cost too.
...
Escape a string for a sed replace pattern
...es, forward slash for end of statement and & for replace all):
ESCAPED_REPLACE=$(printf '%s\n' "$REPLACE" | sed -e 's/[\/&]/\\&/g')
# Now you can use ESCAPED_REPLACE in the original sed statement
sed "s/KEYWORD/$ESCAPED_REPLACE/g"
If you ever need to escape the KEYWORD string, the fol...
Should I use the datetime or timestamp data type in MySQL?
...native format. You can do calculations within MySQL that way
("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)") and it is simple to change the format of the value to a UNIX timestamp ("SELECT UNIX_TIMESTAMP(my_datetime)") when you query the record if you want to operate on it with PHP.
...
How to change the default collation of a table?
creates a table with the default collation latin1_general_ci ;
4 Answers
4
...
Why does printf not flush after the call unless a newline is in the format string?
...;
or its secure version setvbuf as explained here
setvbuf(stdout, NULL, _IONBF, 0);
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Eclipse hangs on loading workbench
...
#
#
# error
#
# show an error message and exit
#
# params:
# 1: l_msg - the message to display
error() {
local l_msg="$1"
echo "error: $l_msg" 1>&2
exit 1
}
#
# autoinstall
#
# check that l_prog is available by calling which
# if not available install from given package de...
WordPress asking for my FTP credentials to install plugins
...
Try to add the code in wp-config.php:
define('FS_METHOD', 'direct');
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UIButton: Making the hit area larger than the default hit area
...utton (Extensions)
@dynamic hitTestEdgeInsets;
static const NSString *KEY_HIT_TEST_EDGE_INSETS = @"HitTestEdgeInsets";
-(void)setHitTestEdgeInsets:(UIEdgeInsets)hitTestEdgeInsets {
NSValue *value = [NSValue value:&hitTestEdgeInsets withObjCType:@encode(UIEdgeInsets)];
objc_setAssociat...
Get difference between 2 dates in JavaScript? [duplicate]
... between those two UTC dates.
Now, the solution can be written as,
const _MS_PER_DAY = 1000 * 60 * 60 * 24;
// a and b are javascript Date objects
function dateDiffInDays(a, b) {
// Discard the time and time-zone information.
const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
...
Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
...aceAll("^ +| +$|( )+", "$1")
);
}
There are 3 alternates:
^_+ : any sequence of spaces at the beginning of the string
Match and replace with $1, which captures the empty string
_+$ : any sequence of spaces at the end of the string
Match and replace with $1, which captures the em...