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recursively add file extension to all files
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229
Alternative command without an explicit loop (man find):
find . -type f -exec mv '{}' '{}'.jp...
What is the correct answer for cout
...been updated. In particular:
In a shift operator expression E1<<E2 and E1>>E2, every value computation and side-effect of E1 is sequenced before every value computation and side effect of E2.
Which means that it requires the code to produce result b, which outputs 01.
See P0145R3 ...
Why is pow(a, d, n) so much faster than a**d % n?
...Miller-Rabin primality test , and was puzzled why it was taking so long (> 20 seconds) for midsize numbers (~7 digits). I eventually found the following line of code to be the source of the problem:
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jquery append to front/top of list
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250
$("ul").prepend("<li>ONE</li>");
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Byte[] to InputStream or OutputStream
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200
You create and use byte array I/O streams as follows:
byte[] source = ...;
ByteArrayInputStre...
Specifying colClasses in the read.csv
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George DontasGeorge Dontas
26.7k1717 gold badges100100 silver badges138138 bronze badges
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Get value from hidden field using jQuery
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255
Use val() instead of text()
var hv = $('#h_v').val();
alert(hv);
You had these problems:
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Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
... yes
MySQL - no; DDL causes an implicit commit
Oracle Database 11g Release 2 and above - by default, no, but an alternative called edition-based redefinition exists
Older versions of Oracle - no; DDL causes an implicit commit
SQL Server - yes
Sybase Adaptive Server - yes
DB2 - yes
Informix - yes
Fir...
What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
The 'Wat' talk for CodeMash 2012 basically points out a few bizarre quirks with Ruby and JavaScript.
5 Answers
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Linq: What is the difference between Select and Where
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129
Where
finds items that match and only returns those that do (filtering).
-> IEnumerable<...