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What's a quick way to test to see a file exists?
...o see if a file exists in my iPhone app's Documents directory (or any path for that matter). I can enumerate through the directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist.
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Is “ ” a replacement of “ ”?
...ad of   . So I just wanted to check: is this the new replacement for white space? If yes, any idea why they changed?
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RegEx - Match Numbers of Variable Length
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This took me way too long to find ... thank you for this information!
– level42
Jul 6 at 23:33
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C++ compile error: has initializer but incomplete type
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Thanks for contributing an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based o...
How to remove globally a package from Composer?
... it's ~/.composer), see http://getcomposer.org/doc/03-cli.md#composer-home for more details.
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Android - How To Override the “Back” button so it doesn't Finish() my Activity?
... plan on having a service run in the background, make sure to look at startForeground() and make sure to have an ongoing notification or else Android will kill your service if it needs to free memory.
@Override
public void onBackPressed() {
Log.d("CDA", "onBackPressed Called");
Intent setInte...
Align two inline-blocks left and right on same line
... the after pseudo-element one can do a trick of setting the font-size to 0 for the parent element and resetting it back to say 14px for the child elements. The working example of this trick can be seen here: http://jsfiddle.net/skip405/NfeVh/326/
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Read password from stdin
Scenario: An interactive CLI Python program, that is in need for a password. That means also, there's no GUI solution possible.
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PHP sprintf escaping %
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It is very easy.
Put another % in front of the original % to escape it.
For example,
$num=23;
printf("%%d of 23 = %d",$num);
Output:
%d of 23 = 23
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Change type of varchar field to integer: “cannot be cast automatically to type integer”
...ame TYPE integer USING (trim(col_name)::integer);
to strip white space before converting.
This shoud've been obvious from an error message if the command was run in psql, but it's possible PgAdmin-III isn't showing you the full error. Here's what happens if I test it in psql on PostgreSQL 9.2:
=...