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What does the 'b' character do in front of a string literal?
...ore symbols than the b and u that do
other things?
The r prefix creates a raw string (e.g., r'\t' is a backslash + t instead of a tab), and triple quotes '''...''' or """...""" allow multi-line string literals.
share
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SQL Server Regular expressions in T-SQL
...n't let me specify a pattern that matches, say, a variable number of ascii letters. % matches 0 or more characters (regardless), [...] matches just one, and there is nothing in between.
– Martijn Pieters♦
Mar 26 '18 at 9:43
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Difference between CLOB and BLOB from DB2 and Oracle Perspective?
...hould probably have been included in your answer. The hint is in the first letter of the acronym.
– underscore_d
Sep 9 '15 at 9:52
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How to use the “number_to_currency” helper method in the model rather than view?
...ust this one thing” to a bloated model. App helpers in Rails are a junk-drawer, presenters/view-models are easier to manage. I don’t see creating the data for a report and generating the (html|pdf|csv|etc.) view of that data as a single responsibility any more than I do for, e.g., a person and a...
What's the best way to set a single pixel in an HTML5 canvas?
...;
d[3] = a;
myContext.putImageData( id, x, y );
Use fillRect() to draw a pixel (there should be no aliasing issues):
ctx.fillStyle = "rgba("+r+","+g+","+b+","+(a/255)+")";
ctx.fillRect( x, y, 1, 1 );
You can test the speed of these here: http://jsperf.com/setting-canvas-pixel/9 or here h...
Why split the tag when writing it with document.write()?
...handled differently by user agents. Markup and entities must be treated as raw text and passed to the application as is. The first occurrence of the character sequence "</" (end-tag open delimiter) is treated as terminating the end of the element's content. In valid documents, this would be the e...
Fastest Way of Inserting in Entity Framework
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SqlBulkCopy is definitely the way to go if you need raw speed or if you will be re-running this insert. I've inserted several million records with it before and it is extremely fast. That said, unless you will need to re-run this insert, it might be easier to just use EF.
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Is it possible to install another version of Python to Virtualenv?
...get http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
$ wget https://raw.github.com/pypa/virtualenv/master/virtualenv.py
Extract and install Python-2.7.3 into the pyenv dir. make clean is optional if you are doing this a 2nd, 3rd, Nth time...
$ tar -xzvf Python-2.7.3.tgz
$ cd Python-2.7.3
$ ...
Black transparent overlay on image hover with only CSS?
...ightness(50%);
}
JSFiddle Demo
References
https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
http://www.html5rocks.com/en/tutorials/filters/understanding-css/
https://developer.mozilla.org/en-US/docs/Web/CSS/filter
http://davidwalsh.name/css-filters
http://net.tutsplus.com/tutorials/ht...
Why catch and rethrow an exception in C#?
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Under MS convention, only two-letter acronyms should remain uppercase (IOException), longer acronyms should be PascalCased (SqlException). Unlike in Java (see SQLException). That's the reason probably why SQLException bothers you, @MichaelMyers.
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