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What is the difference between save and insert in Mongo DB?
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Consider the below document
{ "_id" : 1, "domainName" : "test1.com", "hosting" : "hostgator.com" }
if db already contains the document with _id:1, then
save operation will throw the exception like below
E11000 duplicate key error index ...........
and where as insert operati...
How to loop through a plain JavaScript object with the objects as members?
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@techiev2 those tests were never valid. See my updated ones for the current state of performance: jsperf.com/objdir/20
– OrganicPanda
Oct 16 '14 at 10:39
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How to tell if a file is git tracked (by shell exit code)?
...y like grep to see if there was any output.
For example,
git-ls-files test_file.c | grep .
will exit with a zero code if the file is tracked, but a exit code of one if the file is not tracked.
share
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How to perform file system scanning
...ite a function that does that I recommend ioutil.ReadDir. My own benchmark test showed that it is faster and less memory intensive than filepath.Glob.
Additionally, ioutil.ReadDir is sorting files by basename using basic string comparison (strA > strB). As a devops guy, I generally sort dir name...
ASP.NET Identity reset password
...serId();//"<YourLogicAssignsRequestedUserId>";
String newPassword = "test@123"; //"<PasswordAsTypedByUser>";
String hashedNewPassword = UserManager.PasswordHasher.HashPassword(newPassword);
ApplicationUser cUser = await store.FindByIdAsync(userId);
await store.SetPass...
Convert a number range to another range, maintaining ratio
... if reverseOutput:
result = newMax - portion
return result
#test cases
print remap( 25.0, 0.0, 100.0, 1.0, -1.0 ), "==", 0.5
print remap( 25.0, 100.0, -100.0, -1.0, 1.0 ), "==", -0.25
print remap( -125.0, -100.0, -200.0, 1.0, -1.0 ), "==", 0.5
print remap( -125.0, -200.0, -100.0, -1.0...
View list of all JavaScript variables in Google Chrome Console
... DMDScript, etc...- it doesn't, so window.hasOwnProperty doesn't exist, to test it we can: Object.prototype.isPrototypeOf(window);
– Christian C. Salvadó
Oct 1 '10 at 22:38
10
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Prevent nginx 504 Gateway timeout using PHP set_time_limit()
...re as follows.
set timeout header eg: in ajax
$.ajax({
url: "test.html",
error: function(){
// will fire when timeout is reached
},
success: function(){
//do something
},
timeout: 3000 // sets timeout to 3 seconds
});
nginx Client tim...
What's an easy way to read random line from a file in Unix command line?
...s (or Mac?). @Tracker1's perl one-liner below is more portable (and by my tests, is slightly faster).
– Adam Katz
Dec 19 '14 at 21:49
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sho...
How to display loading message when an iFrame is loading?
...d from what I've read the browser support should be fairly decent (haven't tested it though):
Chrome >= 27
FireFox >= 30
Internet Explorer >= 9
Safari >= 5.1
html:
<iframe class="iframe-placeholder" src=""></iframe>
css:
.iframe-placeholder
{
background: url('data:...