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How to search DOM elements using XPath or CSS selectors in Chrome Developer Tools?
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answered Aug 29 '11 at 20:49
Matt PolitoMatt Polito
8,86022 gold badges1616 silver badges1313 bronze badges
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C++ Tuple vs Struct
...nchmark code and performance results collected using gcc-4.9.2 and clang-4.0.0:
std::vector<StructData> test_struct_data(const size_t N) {
std::vector<StructData> data(N);
std::transform(data.begin(), data.end(), data.begin(), [N](auto item) {
std::random_device rd;
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Python/postgres/psycopg2: getting ID of row just inserted
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208
cursor.execute("INSERT INTO .... RETURNING id")
id_of_new_row = cursor.fetchone()[0]
And plea...
What is Ruby equivalent of Python's `s= “hello, %s. Where is %s?” % (“John”,“Mary”)`
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edited Apr 4 '18 at 8:02
siegy22
3,71911 gold badge1616 silver badges3838 bronze badges
answered Aug...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
I want to copy a CSV file to a Postgres table. There are about 100 columns in this table, so I do not want to rewrite them if I don't have to.
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What are the best practices for JavaScript error handling?
...erprise JavaScript Error Handling can be found at http://www.devhands.com/2008/10/javascript-error-handling-and-general-best-practices/
In short it summarizes:
Assume your code will fail
Log errors to the server
You, not the browser, handle errors
Identify where errors might occur
Throw your own ...
Attach IntelliJ IDEA debugger to a running Java process
...ree read-only fields. These are options that tell the JVM to open up port 5005 for remote debugging when running your application. Add the appropriate one to the JVM options of the application you are debugging. One way you might do this would be like so:
export JAVA_OPTS="-agentlib:jdwp=transport=...
Convert UNIX epoch to Date object
...ntegers representing the number of seconds since the UNIX epoch (e.g. 1352068320 ), but Date objects seem more appropriate for plotting. How can I do the conversion?
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generate days from date range
...ps, procedures, or temp tables. The subquery generates dates for the last 10,000 days, and could be extended to go as far back or forward as you wish.
select a.Date
from (
select curdate() - INTERVAL (a.a + (10 * b.a) + (100 * c.a) + (1000 * d.a) ) DAY as Date
from (select 0 as a union all...
SQL join on multiple columns in same tables
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206
Join like this:
ON a.userid = b.sourceid AND a.listid = b.destinationid;
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