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What is the purpose of XORing a register with itself? [duplicate]
...ad dependency on eax, so the execution time is the same" The processor actually does even better: it just executes a register rename internally, and doesn't even do anything at all with eax.
– kquinn
Sep 8 '09 at 22:16
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Send POST data on redirect with JavaScript/jQuery? [duplicate]
Basically what I want to do is send POST data when I change the window.location , as if a user has submitted a form and it went to a new page. I need to do it this way because I need to pass along a hidden URL, and I can’t simply place it in the URL as a GET for cosmetic reasons.
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Count the number of commits on a Git branch
...e branch
git rev-list --count HEAD ^<branch-name>
This will count all commits ever made that are not on the branch-name as well.
Examples
git checkout master
git checkout -b test
<We do 3 commits>
git rev-list --count HEAD ^master
Result: 3
If your branch comes of a branch called...
How to convert an Int to a String of a given length with leading zeros to align?
...this Q&A becomes the canonical compendium,
scala> import java.text._
import java.text._
scala> NumberFormat.getIntegerInstance.asInstanceOf[DecimalFormat]
res0: java.text.DecimalFormat = java.text.DecimalFormat@674dc
scala> .applyPattern("0000000")
scala> res0.format(123)
res2: S...
What would cause an algorithm to have O(log n) complexity?
...er dividing n in half i times we'll have a value that is at most 1. The smallest i for which this is guaranteed is roughly log2 n, so if we have an algorithm that divides by 2 until the number gets sufficiently small, then we can say that it terminates in O(log n) steps.
An important detail is tha...
Difference between String#equals and String#contentEquals methods
...This way, you can implement the sense of "equal content" more freely. This allows you to make intelligent comparisons between a StringBuffer and a String, for example.
And to say what exactly the difference is:
String.contentEquals() can compare the contents of a String, a StringBuilder, a String...
Difference between author and committer in Git?
...ld find was using the environment variables to override the committer:
GIT_COMMITTER_NAME='a' GIT_COMMITTER_EMAIL='a' git commit --author 'a <a>'
How to get the committer and commit date of a given commit?
Only author data shows by default on git log.
To see the committer date you can eit...
DropDownList in MVC 4 with Razor
...iew to cast it , like this: @Html.DropDownListFor(model => model.model_year, ViewBag.Years as List<SelectListItem>, "-- Select Year --")
– Bashar Abu Shamaa
Feb 26 '16 at 19:23
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Cannot drop database because it is currently in use
...ame'} returns nothing. Yet it till complains. This doesn't seem to actually work.
– Pxtl
Mar 12 at 21:56
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jquery save json data object in cookie
...base64 (using atob).
val = JSON.stringify(userData)
val = btoa(val)
write_cookie(val)
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