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What is the proper way to test if a parameter is empty in a batch file?
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From IF /?:
If Command Extensions are enabled IF
changes as follows:
IF [/I] string1 compare-op string2 command
IF CMDEXTVERSION number command
IF DEFINED variable command
......
The DEFINED conditional work...
Are inline virtual functions really a non-sense?
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Virtual functions can be inlined sometimes. An excerpt from the excellent C++ faq:
"The only time an inline virtual call
can be inlined is when the compiler
knows the "exact class" of the object
which is the target of the virtual
function call. This can happen only
...
Make a link open a new window (not tab) [duplicate]
...re, that opening windows via javascript (if not done in the onclick event from an anchor element) are subject to getting blocked by popup blockers!
[1] This attribute dates back to the times when browsers did not have tabs and using framesets was state of the art. In the meantime, the functionalit...
What is the difference between server side cookie and client side cookie?
... example:
GET /index.html HTTP/1.1
Host: www.example.com
Example answer from the server:
HTTP/1.1 200 OK
Content-type: text/html
Set-Cookie: foo=10
Set-Cookie: bar=20; Expires=Fri, 30 Sep 2011 11:48:00 GMT
... rest of the response
Here two cookies foo=10 and bar=20 are stored on the browser. ...
How to create UILabel programmatically using Swift?
... You don't need to implicitly declare this as UILabel, it's inferred from UILabel()
– CW0007007
Jun 6 '14 at 12:31
5
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jQuery lose focus event
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what's the difference from this to blur?
– cregox
Mar 3 '11 at 23:30
5
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Get DateTime.Now with milliseconds precision
...can't. Usually the system clock (which is where DateTime.Now gets its data from) has a resolution of around 10-15 ms. See Eric Lippert's blog post about precision and accuracy for more details.
If you need more accurate timing than this, you may want to look into using an NTP client.
However, it's...
Use URI builder in Android or create URL with variables
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Excellent answer from above turned into a simple utility method.
private Uri buildURI(String url, Map<String, String> params) {
// build url with parameters.
Uri.Builder builder = Uri.parse(url).buildUpon();
for (Map.Entry...
Testing modules in rspec
... solution in rspec homepage. Apparently it supports shared example groups. From https://www.relishapp.com/rspec/rspec-core/v/2-13/docs/example-groups/shared-examples!
Shared Example Groups
You can create shared example groups
and include those groups into other
groups.
Suppose you ...
How does this print “hello world”?
...0011000010101000
The program decodes a character for every 5-bits group, from right to left
00100|01100|10010|01111|10111|11111|01111|01100|01100|00101|01000
d | l | r | o | w | | o | l | l | e | h
5-bit codification
For 5 bits, it is posible to represent 2⁵ = 32 ch...