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Multiline bash commands in makefile
...ipts within makefiles:
Escape the script's use of $ by replacing with $$
Convert the script to work as a single line by inserting ; between commands
If you want to write the script on multiple lines, escape end-of-line with \
Optionally start with set -e to match make's provision to abort on sub-c...
Is there documentation for the Rails column types?
... captured via textarea, use Text. For input using textfields, use string.
Integer:
Whole numbers
Float:
Decimal numbers stored with floating point precision
Precision is fixed, which can be problematic for some calculations; generally no good for math operations due to inaccurate rounding.
De...
When is the init() function run?
...suming you have this:
var WhatIsThe = AnswerToLife()
func AnswerToLife() int {
return 42
}
func init() {
WhatIsThe = 0
}
func main() {
if WhatIsThe == 0 {
fmt.Println("It's all a lie.")
}
}
AnswerToLife() is guaranteed to run before init() is called, and init() is guara...
How to get the raw value an field?
... to set the value to an empty string if the input isn't a valid floating point number.
The value sanitization algorithm is as follows: If the value of the
element is not a valid floating-point number, then set it to the empty
string instead.
By specifying the type (<input type="number"&...
What is the proper way to URL encode Unicode characters?
...present characters from the unreserved set without translation, and should convert all other characters to bytes according to UTF-8, and then percent-encode those values. This requirement was introduced in January 2005 with the publication of RFC 3986. URI schemes introduced before this date are not...
Common MySQL fields and their appropriate data types
...that an unformatted US phone number is too big to be stored as an unsigned int, it must be at least a bigint.
5 Answers
...
How to gracefully handle the SIGKILL signal in Java
...n hook. If you can use (SIGTERM) kill -15 the shutdown hook will work. (SIGINT) kill -2 DOES cause the program to gracefully exit and run the shutdown hooks.
Registers a new virtual-machine shutdown hook.
The Java virtual machine shuts down in response to two kinds of events:
The pr...
What is mod_php?
... of using PHP as a module is speed - you will see a big speed boost if you convert from CGI to a module. Many people, particularly Windows users, do not realise this, and carry on using the php.exe CGI SAPI, which is a shame - the module is usually three to five times faster.
There is one key advant...
SQlite Getting nearest locations (with latitude and longitude)
... the fudge factor in radians and the columns in degrees? Shouldn't them be converted to the same unit?
– Rangel Reale
Dec 11 '12 at 18:46
1
...
Explain Morris inorder tree traversal without using stacks or recursion
...
This method can be used in places like converting a binary tree into linked list.
– cyber_raj
Aug 9 '16 at 19:03
...