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PHP: How to check if image file exists?
...if it is a file then you should use is_file together with file_exists to know if there is really a file behind the path, otherwise file_exists will return true for any existing path.
Here is the function i use :
function fileExists($filePath)
{
return is_file($filePath) && file_...
How do I convert dates in a Pandas data frame to a 'date' data type?
...oing
df['time'] = pd.to_datetime(df['time'])
Throws a
ValueError: Unknown string format
That means you have invalid (non-coercible) values. If you are okay with having them converted to pd.NaT, you can add an errors='coerce' argument to to_datetime:
df['time'] = pd.to_datetime(df['time'], e...
Ruby / Rails - Change the timezone of a Time, without changing the value
...Suppose the target time to convert is after the D/ST transition while Time.now is before the change. Would that work ?
– Cyril Duchon-Doris
Oct 26 '16 at 18:42
add a comment
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How to make an AJAX call without jQuery?
...
I know this is a fairly old question, but there is now a nicer API available natively in newer browsers. The fetch() method allow you to make web requests.
For example, to request some json from /get-data:
var opts = {
method...
Getting the current page
...he last of which - page five - will show that remaining 0.313 of content.
Now, numberOfPages being five means that the page indices will be 0, 1, 2, 3, and 4.
When I swipe rightwards, paging towards the final offset, the scrollViewDidEndDecelerating method gives a final X offset of 2412.
Applyin...
sh: 0: getcwd() failed: No such file or directory on cited drive
... can happen with symlinks sometimes. If you experience this issue and you know you are in an existing directory, but your symlink may have changed, you can use this command:
cd $(pwd)
share
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impr...
How can I include raw JSON in an object using Jackson?
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@Piotr the javadoc now says "Method that will produce (as of Jackson 2.10) valid JSON using default settings of databind, as String"
– bernie
Apr 28 at 20:11
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VS 2010 Test Runner error “The agent process was stopped while the test was running.”
...m: some tests fail and they are different in different test runs. I don't know exactly the reason why it happens, but it began to occur when I added a finalizer to one of my classes. When I disable the finalizer - the problem disappears. When I turn the finalizer on - the problem comes back.
Right ...
NoSql vs Relational database
... big advantages:
Strong mathematical basis.
Declarative syntax.
A well-known language in Structured Query Language (SQL).
Those haven't gone away.
It's a mistake to think about this as an either/or argument. NoSQL is an alternative that people need to consider when it fits, that's all.
Docum...
The input is not a valid Base-64 string as it contains a non-base 64 character
...w. Logic is to remove everything after , if data: is present. Bam. Working now.
– Maxime Rouiller
Jun 14 '16 at 13:14
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