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Exploring Docker container's file system
I've noticed with docker that I need to understand what's happening inside a container or what files exist in there. One example is downloading images from the docker index - you don't have a clue what the image contains so it's impossible to start the application.
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How do I use valgrind to find memory leaks?
...n C/C++ functions.
General advice for memory leaks:
Make sure your dynamically allocated memory does in fact get freed.
Don't allocate memory and forget to assign the pointer.
Don't overwrite a pointer with a new one unless the old memory is freed.
General advice for memory errors:
Access and w...
Quickly create a large file on a Linux system
...llocate is not supported by ext3 either. bugzilla.redhat.com/show_bug.cgi?id=563492
– Eddie
Jul 7 '14 at 13:43
3
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Ruby Array find_first object?
... a certain criterion. I'd like to efficiently find that object. The best idea I have from the docs is this:
4 Answers
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Css pseudo classes input:not(disabled)not:[type=“submit”]:focus
...up/missing colons and parentheses on the :not() selector.
Demo: http://jsfiddle.net/HSKPx/
One thing to note: I may be wrong, but I don't think disabled inputs can normally receive focus, so that part may be redundant.
Alternatively, use :enabled
input:enabled:not([type="submit"]):focus { /* sty...
Generating a list of which files changed between hg versions
...ut, depending what you mean by "between two revisions", you might also consider using the "x::y" (DAG - Directed Acyclic Graph) range.
Given parallel changesets,
1--2---4
\---3
hg status --rev 1:4 would return (1,2,3,4),
i.e. anything between and including the endpoints, according to the loca...
JavaScript/regex: Remove text between parentheses
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Where the parentheses are in the middle of a string, the regex above will remove all the whitespace around them. This is probably not good.
– Nigel Johnson
Nov 13 '17 at 11:42
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MySQLDump one INSERT statement for each data row
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id: "1"
};
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StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
log all queries that mongoose fire in the application
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Get css top value as number not as string?
... Using || 0 will convert Nan to 0 without the testing step.
I've also provided float and int variations to suit the intended use:
jQuery.fn.cssInt = function (prop) {
return parseInt(this.css(prop), 10) || 0;
};
jQuery.fn.cssFloat = function (prop) {
return parseFloat(this.css(prop)) || 0...