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How can I check if a string represents an int, without using try/except?
Is there any way to tell whether a string represents an integer (e.g., '3' , '-17' but not '3.14' or 'asfasfas' ) Without using a try/except mechanism?
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Regex to validate password strength
...:
^ Start anchor
(?=.*[A-Z].*[A-Z]) Ensure string has two uppercase letters.
(?=.*[!@#$&*]) Ensure string has one special case letter.
(?=.*[0-9].*[0-9]) Ensure string has two digits.
(?=.*[a-z].*[a-z].*[a-z]) Ensure string has three lowercase le...
Is there an ignore command for git like there is for svn?
...
A very useful git ignore command comes with the awesome tj/git-extras.
Here are a few usage examples:
List all currently ignored patterns
git ignore
Add a pattern
git ignore "*.log"
Add one of the templates from gitignore.io
git ignore-io -a rails
git-extras provides many more...
top -c command in linux to filter processes listed based on processname
... pgrep to get pid's of matching command lines:
top -c -p $(pgrep -d',' -f string_to_match_in_cmd_line)
top -p expects a comma separated list of pids so we use -d',' in pgrep. The -f flag in pgrep makes it match the command line instead of program name.
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PHP convert XML to JSON
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Json & Array from XML in 3 lines:
$xml = simplexml_load_string($xml_string);
$json = json_encode($xml);
$array = json_decode($json,TRUE);
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How do I use IValidatableObject?
...upedByMembers)
{
ModelState.AddModelError(
member.Key,
string.Join(". ", member.Select(m => m.Error)));
}
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How can you make a custom keyboard in Android?
...he key is pressed. See keyOutputText if you want to input a longer Unicode string.
keyLabel: This is the text that is displayed on the key.
keyEdgeFlags: This indicates which edge the key should be aligned to.
isRepeatable: If you hold down the key it will keep repeating the input.
method.xml
Th...
Print multiple arguments in Python
...e for %(n)s is %(s)s" % {'n': name, 's': score})
There's also new-style string formatting, which might be a little easier to read:
Use new-style string formatting:
print("Total score for {} is {}".format(name, score))
Use new-style string formatting with numbers (useful for reordering or prin...
How to delete a file from SD card?
...YCOMB)
public static boolean deleteViaContentProvider(Context context, String fullname)
{
Uri uri=getFileUri(context,fullname);
if (uri==null)
{
return false;
}
try
{
ContentResolver resolver=context.getContentResolver();
...
How to change the type of a field?
...ase, it looks like you're trying to change the $type from 1 (double) to 2 (string).
So simply load the document from the DB, perform the cast (new String(x)) and then save the document again.
If you need to do this programmatically and entirely from the shell, you can use the find(...).forEach(fun...