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Can a shell script set environment variables of the calling shell? [duplicate]
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In other words, dot space is a replacement for bash's source in other shells.
– stevesliva
Feb 12 '15 at 23:29
2
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postgresql - replace all instances of a string within text field
...ctively. I will also use \m and \M to match the beginning and the end of a word, respectively.
There are usually quite a few gotchas when performing regex replacment. Let's see how easy it is to replace a cat with a dog.
SELECT regexp_replace('Cat bobcat cat cats catfish', 'cat', 'dog');
--> ...
CSS overflow-x: visible; and overflow-y: hidden; causing scrollbar issue
...e’
becomes ‘auto’ also when combined with
‘hidden’ (in other words: ‘visible’
becomes ‘auto’ when combined with
anything else different from
‘visible’). Gecko 1.8, Safari 3, Opera
9.5 are pretty consistent among them.
also the W3C spec says:
The computed value...
How to compare strings ignoring the case
...
If you like using words, you can replace the == 0 with zero?
– Andrew Grimm
May 16 '12 at 22:23
3
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What is a non-capturing group in regular expressions?
...s use this dumb regex over it:
\b(\S)(\S)(\S)(\S*)\b
This regex matches words with at least 3 characters, and uses groups to separate the first three letters. The result is this:
Match "Lorem"
Group 1: "L"
Group 2: "o"
Group 3: "r"
Group 4: "em"
Match "ipsum"
Group 1: "i...
if arguments is equal to this string, define a variable like this string
...l to z* (literal matching).
if [ $a == z* ]; then # File globbing and word splitting take place.
if [ "$a" == "z*" ]; then # True if $a is equal to z* (literal matching).
I hope that helps!
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Why is using “for…in” for array iteration a bad idea?
...efined
3: undefined
4: undefined
5: xyz
for...in:
0: 5
1: foo
In other words:
for...of counts from 0 to 5, and also ignores Array.prototype.foo. It shows array values.
for...in lists only the 5, ignoring undefined array indexes, but adding foo. It shows array property
How do I prevent 'git diff' from using a pager?
... pager for git diff" (see the comments).
But the documentation just got reworded (for git 1.8.5 or 1.9, Q4 2013).
Text viewer for use by Git commands (e.g., 'less').
The value is meant to be interpreted by the shell.
The order of preference is:
the $GIT_PAGER environment vari...
Find method references in Xcode
.... Make sure no text gets selected otherwise it'll search for the selected word rather than the entire selector. To do so, you can click with the left mouse button prior to clicking with the right mouse button (or Control-clicking) in the same location. There's no such issue with the contextual Fi...
Why was the switch statement designed to need a break?
...cases. Fall through
occurs in just 3% of all these cases.
In other words, the normal switch
behavior is wrong 97% of the time.
It's not just in a compiler - on the
contrary, where fall through was used
in this analysis it was often for
situations that occur more frequently
in a c...