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How to check if a string is a valid JSON string in JavaScript without using Try/Catch
...arseJSON("false") and tryParseJSON("garbage")
– sparebytes
Feb 22 '18 at 17:32
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Changing every value in a hash in Ruby
...to the same string objects):
# Two ways to achieve the same result (any Ruby version)
my_hash.each{ |_,str| str.gsub! /^|$/, '%' }
my_hash.each{ |_,str| str.replace "%#{str}%" }
If you want the hash to change in place, but you don't want to affect the strings (you want it to get new strings):
# ...
Bash history without line numbers
... the time stamp associated
with each history entry displayed by the history builtin. If
this variable is set, time stamps are written to the history
file so they may be preserved across shell sessions. This uses
the history comment character ...
Git on Bitbucket: Always asked for password, even after uploading my public SSH key
...to enter username / password each time you push / pull. Check above answer by @manojlds
But if you want to clone with HTTPS and want to avoid entering username / password each time, you can store credentials into cache with below command:
git config --global credential.helper 'cache --timeout 3600...
Send response to all clients except sender
...// New way
I wanted to edit the post of @soyuka but my edit was rejected by peer-review.
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postgres: upgrade a user to be a superuser?
...SER | INHERIT | NOINHERIT | LOGIN | NOLOGIN | REPLICATION|
NOREPLICATION | BYPASSRLS | NOBYPASSRLS | CONNECTION LIMIT connlimit |
[ ENCRYPTED | UNENCRYPTED ] PASSWORD 'password' | VALID UNTIL 'timestamp'
So in command line it will look like
postgres=# ALTER USER my_user WITH LOGIN
OR use an e...
How to namespace Twitter Bootstrap so styles don't conflict
...backdrop div, since that is always added directly to the <body> tag, bypassing your namespacing element which has the styles applied to it.
You can fix this by changing the plugin's reference to $body before it shows the backdrop:
myDialog.modal({
show: false
});
myDialog.data("bs.moda...
What is the rationale behind having companion objects in Scala?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
How to comment out a block of Python code in Vim
...lly places '<,'> on the command line) I can then uncomment the block by sweeping out the same visual block and:
:'<,'>s/^#//
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Override valueof() and toString() in Java enum
...
How about a Java 8 implementation? (null can be replaced by your default Enum)
public static RandomEnum getEnum(String value) {
return Arrays.stream(RandomEnum.values()).filter(m -> m.value.equals(value)).findAny().orElse(null);
}
Or you could use:
...findAny().orElseThrow(...