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How to check for valid email address? [duplicate]
...e sure it is a proper style email address? Been searching since last night and everybody that has answered peoples questions regarding this topic also seems to have problems with it if it is a subdomained email address.
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What command means “do nothing” in a conditional in Bash?
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The no-op command in shell is : (colon).
if [ "$a" -ge 10 ]
then
:
elif [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
From the bash manual:
: (a colon)
Do nothing beyond expanding arguments and performing redirections....
How to resume Fragment from BackStack if exists
...asier since it shouldn't require keeping track of a number that may change and reinforces the "unique back stack entry" logic.
Since you want only one back stack entry per Fragment, make the back state name the Fragment's class name (via getClass().getName()). Then when replacing a Fragment, use th...
How to list all functions in a Python module?
I have a python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it.
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When to use self over $this?
In PHP 5, what is the difference between using self and $this ?
23 Answers
23
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Cannot push to GitHub - keeps saying need merge
... the remote branch into your local branch (see differences with git diff), and want to do a force push, use the push command with -f
git push -f origin <branch>
where origin is the name of your remote repo.
Usually, the command refuses to update a remote ref that is not an ancestor of t...
How to check if character is a letter in Javascript?
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You can still use a regex and just add more detail as you need it: str.match(/[A-Z|a-z|ü|é]/i); //etc
– Eli
Jun 22 '15 at 21:54
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How to delete last character in a string in C#?
...tring.Join("&", parameters);
string.Join takes a seperator ("&") and and array of strings (parameters), and inserts the seperator between each element of the array.
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Best Practice: Access form elements by HTML id or name attribute?
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Give your form an id only, and your input a name only:
<form id="myform">
<input type="text" name="foo">
Then the most standards-compliant and least problematic way to access your input element is via:
document.getElementById("myform"...
How can I get a file's size in C++? [duplicate]
...?
Before answering, make sure it is portable (may be executed on Unix, Mac and Windows),
reliable, easy to understand and without library dependencies (no boost or qt, but for instance glib is ok since it is portable library).
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