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Why would someone use WHERE 1=1 AND in a SQL clause?
...ow on the concatenated conditions.
Basically, it saves you having to do a test for conditions and then add a "WHERE" string before them.
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How to find out line-endings in a text file?
...lity to give you an indication of the type of line endings.
Unix:
$ file testfile1.txt
testfile.txt: ASCII text
"DOS":
$ file testfile2.txt
testfile2.txt: ASCII text, with CRLF line terminators
To convert from "DOS" to Unix:
$ dos2unix testfile2.txt
To convert from Unix to "DOS":
$ unix2d...
When to choose checked and unchecked exceptions
...y compiler. These
runtime exceptions will uncover in
development, and testing period. Then
we have to refactor our code to remove
these errors.
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Automatic HTTPS connection/redirect with node.js/express
...ps://" + req.headers['host'] + req.url });
res.end();
}).listen(80);
Test with https:
$ curl https://127.0.0.1 -k
secure!
With http:
$ curl http://127.0.0.1 -i
HTTP/1.1 301 Moved Permanently
Location: https://127.0.0.1/
Date: Sun, 01 Jun 2014 06:15:16 GMT
Connection: keep-alive
Transfer-E...
How to move/rename a file using an Ansible task on a remote system
.../path/to/source/file
path: /target/path/of/file
state: hard
Only tested on localhost (OSX) though, but should work on Linux as well. I can't tell for Windows.
Note that absolute paths are needed. Else it wouldn't let me create the link. Also you can't cross filesystems, so working with an...
TortoiseHg Apply a Patch
...ame directory path it was generated from.
Downloading TortoiseHg 0.8.1 to test...
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How do BitTorrent magnet links work?
...t tries that 6 times, waiting 40(!) seconds between tries. I guess you can test it by deleting the config files (~/.config/transmission on unix), and blocking all communication to dht.transmissionbt.com, and see what happens (wait 240 seconds at least).
So it appears the client has a bootstrap node...
How to JSON serialize sets?
... called again, this time with obj being a date object, so you just have to test for it and return a date-representation.
– jterrace
Nov 22 '11 at 17:08
...
Word wrap for a label in Windows Forms
...perty.
myLabel.MaximumSize = new Size(100, 0);
myLabel.AutoSize = true;
Tested and works.
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What is the difference between HAVING and WHERE in SQL?
....
This is more useful than it sounds. For example, consider this query to test whether the name column is unique for all values in T:
SELECT 1 AS result
FROM T
HAVING COUNT( DISTINCT name ) = COUNT( name );
There are only two possible results: if the HAVING clause is true then the result with ...