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The difference between fork(), vfork(), exec() and clone()
...all program (think Java's Runtime.exec()). POSIX has standardized the posix_spawn() to replace these latter two more modern uses of vfork().
posix_spawn() does the equivalent of a fork()/execve(), and also allows some fd juggling in between. It's supposed to replace fork()/execve(), mainly for non-M...
C++ templates that accept only certain types
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I suggest using Boost's static assert feature in concert with is_base_of from the Boost Type Traits library:
template<typename T>
class ObservableList {
BOOST_STATIC_ASSERT((is_base_of<List, T>::value)); //Yes, the double parentheses are needed, otherwise the comma will b...
Force to open “Save As…” popup open at text link click for PDF in HTML
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<a href="file link" download target="_blank">Click here to download</a>
It works for me in Firefox and Chrome.
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How do you configure Django for simple development and deployment?
...y earlier answer still applies:
I have multiple settings files.
settings_local.py - host-specific configuration, such as database name, file paths, etc.
settings_development.py - configuration used for development, e.g. DEBUG = True.
settings_production.py - configuration used for production, e.g...
When to use inline function and when not to use it?
...in compilers very sneakily ignore 'inline' completely and only respond to '__inline' or '__force_inline'. I suppose this is to deter abuse!
– Rehno Lindeque
Dec 19 '09 at 8:58
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How to break a line of chained methods in Python?
...al parenthesis:
subkeyword = (
Session.query(Subkeyword.subkeyword_id, Subkeyword.subkeyword_word)
.filter_by(subkeyword_company_id=self.e_company_id)
.filter_by(subkeyword_word=subkeyword_word)
.filter_by(subkeyword_active=True)
.one()
)
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How can I index a MATLAB array returned by a function without first assigning it to a local variable
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How do you feel about using undocumented features:
>> builtin('_paren', magic(5), 3, 3) %# M(3,3)
ans =
13
or for cell arrays:
>> builtin('_brace', num2cell(magic(5)), 3, 3) %# C{3,3}
ans =
13
Just like magic :)
UPDATE:
Bad news, the above hack do...
How to Implement Custom Table View Section Headers and Footers with Storyboard
...ewCell does not belong in UITableView header.
– raven_raven
Sep 28 '17 at 11:23
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
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Casting the pointer to long is an approximation of log_2(float). Casting it back is an approximation of 2^long. This means that you can make the ratio approximately linear.
– wizzwizz4
Sep 1 '17 at 17:29
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No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
...omHeaders>
<add name="Access-Control-Allow-Origin" value="your_clientside_websiteurl" />
</customHeaders>
</httpProtocol>
</system.webServer>
For instance lets say, if the server domain is http://live.makemypublication.com and client is http://www.makemy...