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Use a URL to link to a Google map with a marker on it
...? I simply need to show marker on the map, which doesn't have any specific meaning (it could be in the middle of forest).
– TondaCZE
May 5 '14 at 7:59
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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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How do you maintain development code and production code? [closed]
...t of patches might actually begin before to first release into production (meaning you know you will go into production with some bugs you can not fix in time, but you can initiate work for those bugs in a separate branch)
the other patch branches will have the luxury to start from a well-defined pr...
Which is better option to use for dividing an integer number by 2?
... to trick students, etc... In the absence of a explanation of what 'best' means, this seems to be the most correct answer.
– Ray
May 21 '12 at 8:01
47
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Symfony 2: How do I check if a user is not logged in inside a template?
...er will not be null for anonymous users, isn't that correct? Wouldn't that mean that check for app.user is not sufficient?
– pzaj
Apr 19 '17 at 12:26
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Maximum on http header values?
...TTP spec does not define a limit, however many servers do by default. This means, practically speaking, the lower limit is 8K. For most servers, this limit applies to the sum of the request line and ALL header fields (so keep your cookies short).
Apache 2.0, 2.2: 8K
nginx: 4K - 8K
IIS: varies by v...
CSS hexadecimal RGBA?
...resent the green, blue, and alpha channels, respectively.
What does this mean for the future of CSS colours?
This means that assuming this isn't completely removed from the Level 4 document, we'll soon be able to define our RGBA colours (or HSLA colours, if you're one of those guys) in hexadecima...
How to install a node.js module without using npm?
...re) scope or the local one, it will not attempt to download it again. This means if all the direct dependencies of a repo can be pre-downloaded and copied to the node_module folder, then it will work.
– Tiberiu C.
Dec 8 '17 at 9:24
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How to select rows from a DataFrame based on column values?
...ues == 'foo'
%timeit mask = df['A'] == 'foo'
5.84 µs ± 195 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
166 µs ± 4.45 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
Evaluating the mask with the numpy array is ~ 30 times faster. This is partly due to numpy evalua...
Parse query string into an array
...the second parameter to have the data put in an array instead of into individual variables.
$get_string = "pg_id=2&parent_id=2&document&video";
parse_str($get_string, $get_array);
print_r($get_array);
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