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Pass variables to Ruby script via command line
...ething like this:
ARGV.each do|a|
puts "Argument: #{a}"
end
then
$ ./test.rb "test1 test2"
or
v1 = ARGV[0]
v2 = ARGV[1]
puts v1 #prints test1
puts v2 #prints test2
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impr...
How can I check if string contains characters & whitespace, not just whitespace?
...heck to see if there's at least one character of non whitespace:
if (/\S/.test(myString)) {
// string is not empty and not just whitespace
}
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improve this answer
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...
git diff renamed file
...4
--- a/a.txt
+++ b/a.txt
@@ -1 +1 @@
-hello
+goodbye
diff --git a/a.txt b/test/a.txt
similarity index 100%
copy from a.txt
copy to test/a.txt
Incidentally, if you restrict your diff to just one path (as you do in git diff HEAD^^ HEAD a.txt you aren't ever going to see the renames or copies becaus...
How to prepend a string to a column value in MySQL?
...e statement for updating a particular field of all the rows with a string "test" to be added in the front of the existing value.
...
How to detect IE11?
...he user agent if navigator.appName returns Netscape, something like (the untested);
function getInternetExplorerVersion()
{
var rv = -1;
if (navigator.appName == 'Microsoft Internet Explorer')
{
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\\.0-9]{0,})"...
Mixing a PHP variable with a string literal
Say I have a variable $test and it's defined as: $test = 'cheese'
4 Answers
4
...
Spring Boot - inject map from application.yml
...ringApplication.run(MapBindingSample.class, args)
.getBean(Test.class).getInfo());
}
@Bean
@ConfigurationProperties
public Test test() {
return new Test();
}
public static class Test {
private Map<String, Object> info = new HashMap<...
Getting the first character of a string with $str[0]
...ey send you, from type to type[] for example, and then send 'Control' and 'Test' as the data for this array, $_POST['type'][0] will now return Control rather than C whereas substr($_POST['type'], 0, 1) will simply just fail.
So yes, there may be a problem with using $str[0], but that depends on the...
anchor jumping by using javascript
...
In the latest Firefox, hash changes seem to force a reload for iFrames (in the src attribute). I'd consider this a browser bug, but something to be aware of.
– Beejor
Aug 20 '15 at 23:58
...
How do you rename a MongoDB database?
...
NOTE: Hopefully this changed in the latest version.
You cannot copy data between a MongoDB 4.0 mongod instance (regardless
of the FCV value) and a MongoDB 3.4 and earlier mongod instance.
https://docs.mongodb.com/v4.0/reference/method/db.copyDatabase/
...