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DataTrigger where value is NOT null?
... equality.
This blog post describes how to do comparisons such as LT, GT, etc in a DataTrigger.
This limitation of the DataTrigger can be worked around to some extent by using a Converter to massage the data into a special value you can then compare against, as suggested in Robert Macnee's answer....
Inspecting standard container (std::map) contents with gdb
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I think there isn't, at least not if your source is optimized etc. However, there are some macros for gdb that can inspect STL containers for you:
http://sourceware.org/ml/gdb/2008-02/msg00064.html
However, I don't use this, so YMMV
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How to serialize a TimeSpan to XML
... approach you've posted; it is (for example) efficient (no complex parsing etc), culture independent, unambiguous, and timestamp-type numbers are easily and commonly understood.
As an aside, I often add:
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
This just hides it in the UI...
Apache Kafka vs Apache Storm
...nnect to talk to databases and other data sources (syslog, JMS, log files, etc), and Kafka Streams to do the stream processing (joins, Transforms, filters, aggregations), and back to Kafka Connect to write out to another database or repository.
– Hans Jespersen
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Checkboxes in web pages – how to make them bigger?
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I'm writtinga phonegap app, and checkboxes vary in size, look, etc.
So I made my own simple checkbox:
First the HTML code:
<span role="checkbox"/>
Then the CSS:
[role=checkbox]{
background-image: url(../img/checkbox_nc.png);
height: 15px;
width: 15px;
display: ...
Exclude a directory from git diff
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Be careful if you have a lot of repetitive folder names ('/app', '/lib', etc.), as this will exclude files relative to the current working directory AND the git root directory.
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How to remove a package in sublime text 2
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Simple steps for remove any package from Sublime as phpfmt, Xdebug etc..
1- Go to Sublime menu-> Preference or press Ctrl+Shift+P .
2- Choose -> Remove package option, after you choosing it will display all packge installed in your sublime, select one of them.
3. After selection it ...
How do I print a list of “Build Settings” in Xcode project?
...cal list of Xcode Environment Variables that can be used in Build Rules etc?
7 Answers
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How to quickly open a file in Visual Studio 2012
...u open the file.
Ctrl+, takes too long initially and it shows method names etc, showing a lot of irrelevant results if you just want to open a file.
Using Command Window you have to type open or of, but in some cases this could/might be the fastest.
Hit Ctrl+Alt+A to open the Command Window, then ty...
Split string every nth character?
...never you need something; using bookmarks in (probably) every web browser; etc.
– dylnmc
Nov 2 '14 at 4:03
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