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How to convert a string to lower case in Bash?
...ous ways:
POSIX standard
tr
$ echo "$a" | tr '[:upper:]' '[:lower:]'
hi all
AWK
$ echo "$a" | awk '{print tolower($0)}'
hi all
Non-POSIX
You may run into portability issues with the following examples:
Bash 4.0
$ echo "${a,,}"
hi all
sed
$ echo "$a" | sed -e 's/\(.*\)/\L\1/'
hi all
# t...
How to run a shell script on a Unix console or Mac terminal?
... Then, the script is passed to the program (as second argument) along with all the arguments you gave the script as subsequent arguments.
That means every script that is executable should have a hashbang. If it doesn't, you're not telling the kernel what it is, and therefore the kernel doesn't kno...
How to drop all tables in a SQL Server database?
...
Doesn't consider FKs/order.
– Josh
Mar 28 '16 at 17:37
1
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What is this Javascript “require”?
...es are a way to split an application into separate files instead of having all of your application in one file. This concept is also present in other languages with minor differences in syntax and behavior, like C's include, Python's import, and so on.
One big difference between Node.js modules and...
jQuery/Javascript function to clear all the fields of a form [duplicate]
I am looking for a jQuery function that will clear all the fields of a form after having submitted the form.
11 Answers
...
phpcms后台表单多选统计不准确的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
phpcms后台表单多选统计不准确的解决方法这是由于逻辑有误导致，原逻辑为值与选项值相等才统计一次，但针对多选肯定就不适用了，比如选项1,选项2算两项而不是判断失败不统计。正确...这是由于逻辑有误导致，原逻辑为值与...
Biggest differences of Thrift vs Protocol Buffers?
...tter documentation/examples
Thrift has a builtin Set type
Protocol Buffers allow "extensions" - you can extend an external proto to add extra fields, while still allowing external code to operate on the values. There is no way to do this in Thrift
I find Protocol Buffers much easier to read
Basica...
Why would you use an ivar?
...o correctly step around side effects a subclass' override may introduce in order to do the right thing.
Binary Size
Declaring everything readwrite by default usually results in many accessor methods you never need, when you consider your program's execution for a moment. So it will add some fat to y...
How can I do an asc and desc sort using underscore.js?
...
Descending order using underscore can be done by multiplying the return value by -1.
//Ascending Order:
_.sortBy([2, 3, 1], function(num){
return num;
}); // [1, 2, 3]
//Descending Order:
_.sortBy([2, 3, 1], function(num){
re...
List directory tree structure in python?
... Nice tool, do you have a quick example on how to use criteria in order to exclude folder names?
– Matt-Mac-Muffin
Nov 2 '19 at 22:00
...