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Ruby Bundle Symbol not found: _SSLv2_client_method (LoadError)
... fixed a similar issue on my system. You need to rebuild your install of Ruby 2.1.2 and it will re-link against the newly-updated SSL.
$ rbenv install 2.1.2
rbenv: /Users/ryan/.rbenv/versions/2.1.2 already exists
continue with installation? (y/N) y
Downloading ruby-2.1.2.tar.gz...
-> http://dqw8...
How to reuse an ostringstream?
... inputs: seek get ptr to start
That will prevent some reallocations done by str by overwriting whatever is in the output buffer currently instead. Results are like this:
std::ostringstream s;
s << "hello";
s.seekp(0);
s << "b";
assert(s.str() == "bello");
If you want to use the stri...
How to determine whether a given Linux is 32 bit or 64 bit?
...t capable)
lm ==> 64-bit processor
Or using lshw (as mentioned below by Rolf of Saxony), without sudo (just for grepping the cpu width):
lshw -class cpu|grep "^ width"|uniq|awk '{print $2}'
Note: you can have a 64-bit CPU with a 32-bit kernel installed.
(as ysdx mentions in his/her ow...
What is trunk, branch and tag in Subversion? [duplicate]
...es and /trunk directories is only conventional and not in any way enforced by the tools. Violating these conventions leads to confusion all around, as this breaks habits and expectations of others accessing the repository. Special care must be taken to avoid committing new changes into tags, which s...
css rotate a pseudo :after or :before content:“”
...
Inline elements can't be transformed, and pseudo elements are inline by default, so you must apply display: block or display: inline-block to transform them:
#whatever:after {
content:"\24B6";
display: inline-block;
-webkit-transform: rotate(30deg);
-moz-transform: rotate(30de...
Dispelling the UIImage imageNamed: FUD
...ompressed, but consumes over half a MB decompressed - width * height * 4). By contrast +imageWithContentsOfFile: will decompress that image everytime the image data is needed. As you can imagine, if you only need the image data once, you've won nothing here, except to have a cached version of the im...
Visual Studio, Find and replace, regex
...es {} and the back reference \1: \n references to the n'th group indicated by curly braces in the search expression.
For versions Visual studio 2012 & up:
Starting with VS2012 .NET Framework regular expressions are used. So there it should be:
find include "([a-zA-Z]+\.h)",
replace with include...
How to disable scrolling temporarily?
...
The scroll event cannot be canceled. But you can do it by canceling these interaction events:
Mouse & Touch scroll and Buttons associated with scrolling.
[Working demo]
// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
va...
Calling shell functions with xargs
...return 0 and exit 0 like that masks any error value that might be produced by the command preceding it. Also, if there's no error, it's the default and thus somewhat redundant.
@phobic mentions that the Bash command could be simplified to
bash -c 'echo_var "{}"'
moving the {} directly inside it....
Passing additional variables from command line to make
...LAGS
target:
$(MAKE) -C target
You can also export all variables by using export without arguments.
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