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Difference between no-cache and must-revalidate
...t the response becomes stale right away.
If a response is cacheable for 10 seconds, then must-revalidate kicks in after 10 seconds, whereas no-cache implies must-revalidate after 0 seconds.
At least, that's my interpretation.
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Email validation using jQuery
...ld javascript for that:
function isEmail(email) {
var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/;
return regex.test(email);
}
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How can I set the request header for curl?
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answered Nov 18 '10 at 7:27
Mads MobækMads Mobæk
29.5k2020 gold badges6464 silver badges7575 bronze badges
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Truncate a list to a given number of elements
What method truncates a list--for example to the first 100 elements--discarding the others (without iterating through individual elements)?
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How to completely remove borders from HTML table
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<table cellspacing="0" cellpadding="0">
And in css:
table {border: none;}
EDIT:
As iGEL noted, this solution is officially deprecated (still works though), so if you are starting from scratch, you should go with the jnpcl's border-colla...
Combining two Series into a DataFrame in pandas
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In [4]: pd.concat([s1, s2], axis=1).reset_index()
Out[4]:
index s1 s2
0 A 1 3
1 B 2 4
Note: This extends to more than 2 Series.
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Detect if stdin is a terminal or pipe?
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140
Use isatty:
#include <stdio.h>
#include <io.h>
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if (isatty(fileno(stdin)))
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Adjust list style image position?
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209
Not really. Your padding is (probably) being applied to the list item, so will only affect the ...
PatternSyntaxException: Illegal Repetition when using regex in Java
...message: "Illegal repetition".
You should escape them: "\\{\"user_id\" : [0-9]*\\}".
And since you seem to be trying to parse JSON, I suggest you have a look at Jackson.
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Generating an MD5 checksum of a file
...fit the whole file in memory. In that case, you'll have to read chunks of 4096 bytes sequentially and feed them to the md5 method:
import hashlib
def md5(fname):
hash_md5 = hashlib.md5()
with open(fname, "rb") as f:
for chunk in iter(lambda: f.read(4096), b""):
hash_md5....