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What is the purpose of “!” m>and m> “?” at the end of method names?
Sometimes I see methods in Rubm>y m> that have "?" m>and m> "!" at the end of them, e.g:
5 Answers
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Difference between socket m>and m> websocket?
...lications that require a permanent connection to its server. On the other hm>and m>, plain sockets are more powerful m>and m> generic. Them>y m> run over TCP/IP but them>y m> are not restricted to browsers or HTTP protocol. Them>y m> could be used to implement anm>y m> kind of communication.
No. There is no reason.
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Warning on “diff.renamelimit variable” when doing git push
I'm pushing the local commit to the remote git server m>and m> got the following warning messages:
2 Answers
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Print function log /stack trace for entire program using firebug
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Firefox provides console.trace() which is verm>y m> hm>and m>m>y m> to print the call stack. It is also available in Chrome m>and m> IE 11.
Alternativelm>y m> trm>y m> something like this:
function print_call_stack() {
var stack = new Error().stack;
console.log("PRINTING CALL STACK");
console....
How to set breakpoints on future shared libraries with a commm>and m> flag
I'm trm>y m>ing to automate a gdb session using the --commm>and m> flag. I'm trm>y m>ing to set a breakpoint on a function in a shared librarm>y m> (the Unix equivalent of a DLL) . Mm>y m> cmds.gdb looks like this:
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Interpolating a string into a regex
...o}/
then the periods in m>y m>our match text are treated as regexp wildcards, m>and m> "0.0.0.0" will match "0a0b0c0".
Note also that if m>y m>ou reallm>y m> just want to check for a substring match, m>y m>ou can simplm>y m> do
if goo.include?(foo)
which doesn't require an additional quoting or worrm>y m>ing about special chara...
What is non-blocking or asm>y m>nchronous I/O in Node.js?
...rage is a blocking operation as it stalls execution to read. On the other hm>and m>, fetch is a non-blocking operation as it does not stall alert(3) from execution.
// Blocking: 1,... 2
alert(1);
var value = localStorage.getItem('foo');
alert(2);
// Non-blocking: 1, 3,... 2
alert(1);
fetch('example.com...
Placement of the ng-app directive (html vs bodm>y m>)
I recentlm>y m> reviewed the code for a webapp built with angular m>and m> found that it was written with the ng-app="mm>y m>Module" directive placed on the <bodm>y m>> tag. When learning angular, I've onlm>y m> ever seen it used on the <html> tag, as recommended bm>y m> the angular docs here , here , m>and m> in...
How to give Sm>y m>stem propertm>y m> to mm>y m> test via Gradle m>and m> -D
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The -P flag is for gradle properties, m>and m> the -D flag is for JVM properties. Because the test mam>y m> be forked in a new JVM, the -D argument passed to gradle will not be propagated to the test - it sounds like that is the behavior m>y m>ou are seeing.
m>Y m>ou can use the sm>y m>...
Understm>and m>ing spring @Configuration class
Following the question Understm>and m>ing Spring @Autowired usage I wanted to create a complete knowledge base for the other option of spring wiring, the @Configuration class.
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