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Debugging in Clojure? [closed]

...race) java.io.FileNotFoundException: Could not locate closure/contrib/trace__init.class or closure/contrib/trace.clj on classpath: (NO_SOURCE_FILE:0) – LarsH Sep 3 '10 at 20:49 2 ...
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Rails: Open link in new tab (with 'link_to')

... The target: :_blank parameter should be a parameter of link_to, whereas you put it in image_tag parameters. Modify your code like this: <%= link_to image_tag("facebook.png", class: :facebook_icon, alt: "Facebook"), "http://www.facebo...
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What is the difference between char s[] and char *s?

...So: char *x = "Foo"; // is approximately equivalent to: static const char __secret_anonymous_array[] = "Foo"; char *x = (char *) __secret_anonymous_array; Note that you must not ever attempt to modify the contents of this anonymous array via this pointer; the effects are undefined (often meaning ...
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Chrome, Javascript, window.open in new tab

... As of 9/29/2014, latest Firefox ESR and IE 11 open _blank or window.open links in a new window when the js calls use _blank as the window name. Current Chrome isn't that simple. I tested opening a new window passing top, left, width, height, toolbar, location, directories, st...
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When is assembly faster than C?

...igh part of 64 bit integer multiplication: A portable version using uint64_t for 32x32 => 64-bit multiplies fails to optimize on a 64-bit CPU, so you need intrinsics or __int128 for efficient code on 64-bit systems. _umul128 on Windows 32 bits: MSVC doesn't always do a good job when multiplying ...
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@UniqueConstraint annotation in Java

... @Entity @Table(uniqueConstraints={@UniqueConstraint(columnNames = {"id_1" , "id_2"})}) public class class_name { @Id @GeneratedValue public Long id; @NotNull public Long id_1; @NotNull public Long id_2; } Hope it helped. ...
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unit testing of private functions with mocha and node.js

...r. One way to get around it now is to use module.exports = process.env.NODE_ENV === 'production' ? require('prod.js') : require('dev.js') and store your es6 code differences in those respective files. – cchamberlain Jun 1 '16 at 1:51 ...
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django unit tests without a db

... You can subclass DjangoTestSuiteRunner and override setup_databases and teardown_databases methods to pass. Create a new settings file and set TEST_RUNNER to the new class you just created. Then when you're running your test, specify your new settings file with --settings flag. H...
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?

...1 .locals init ([0] string test1, [1] string test11) IL_0000: nop IL_0001: ldsfld string [mscorlib]System.String::Empty IL_0006: stloc.0 IL_0007: ldloc.0 IL_0008: stloc.1 IL_0009: ret } // end of method Form1::Test1 .method private hidebysig instance void ...
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JSON datetime between Python and JavaScript

... You can add the 'default' parameter to json.dumps to handle this: date_handler = lambda obj: ( obj.isoformat() if isinstance(obj, (datetime.datetime, datetime.date)) else None ) json.dumps(datetime.datetime.now(), default=date_handler) '"2010-04-20T20:08:21.634121"' Which is ISO 8...