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Why can't I use switch statement on a String?
...nse, they are used as an index (after subtracting the lowest value) into a table of instruction pointers—the tableswitch instruction.
If the constants are sparse, a binary search for the correct case is performed—the lookupswitch instruction.
In de-sugaring a switch on String objects, both i...
Vertically aligning CSS :before and :after content [duplicate]
...
You can also use tables to accomplish this, like:
.pdf {
display: table;
}
.pdf:before {
display: table-cell;
vertical-align: middle;
}
Here is an example: https://jsfiddle.net/ar9fadd0/2/
EDIT:
You can also use flex to accomplish t...
When is CRC more appropriate to use than MD5/SHA1?
...
I found a study that shows how inappropriate CRC hashes are for hash tables. It also explains the actual characteristics of the algorithm. The study also includes evaluation of other hash algorithms and is a good reference to keep.
The relevant conclusion on CRC for hashes:
CRC32 was neve...
How to list active / open connections in Oracle?
Is there any hidden table, system variable or something to show active connections in a given moment?
9 Answers
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What is a good choice of database for a small .NET application? [closed]
...hat everybody here forgot to mention
So long as you don't need relational tables you could use CSV file read as a dataset via ADO.NET. (More of a lulz suggestion than anything else but would be suitable in some cases and doesn't require additional libraries for a MS deployment.
...
CSS to stop text wrapping under image
...:
float: left / right
overflow: hidden / auto / scroll
display: table-cell and any table-related values / inline-block
position: absolute / fixed
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How to convert local time string to UTC?
... platform. You could use tzlocal.get_localzone() to provide tzdata in a portable way. (2) fromtimestamp(t, tz) may fail for non-pytz timezones. (3) datetime(*struct_time[:6]) you are missing *. (4) timegm(), utctimetuple(), struct_time -based solutions drop fractions of a second. You could use an e...
PDO's query vs execute
... execution. Which means you can do:
$sth = $db->prepare("SELECT * FROM table WHERE foo = ?");
$sth->execute(array(1));
$results = $sth->fetchAll(PDO::FETCH_ASSOC);
$sth->execute(array(2));
$results = $sth->fetchAll(PDO::FETCH_ASSOC);
They generally will give you a performance impr...
How do I import .sql files into SQLite 3?
...o, your SQL is invalid - you need ; on the end of your statements:
create table server(name varchar(50),ipaddress varchar(15),id init);
create table client(name varchar(50),ipaddress varchar(15),id init);
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How to use Oracle ORDER BY and ROWNUM correctly?
...ory, in Oracle, you need to limit the results manually when you have large tables and/or tables with same column names (and you don't want to explicit type them all out and rename them all). Easy solution is to figure out your breakpoint and limit that in your query. Or you could also do this in the...