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@Transactional(propagation=Propagation.REQUIRED)
...behaviours adopted for Transaction management, such as REQUIRED, ISOLATION etc. you'll have to understand the basics of transaction management itself.
Read Trasaction management for more on explanation.
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C#: Looping through lines of multiline string
...o common that it shouldn't require the calling code to be testing for null etc :) Having said that, if you do want to do a manual loop, this is the form that I typically prefer over Fredrik's:
using (StringReader reader = new StringReader(input))
{
string line;
while ((line = reader.ReadLin...
How to tell if rails is in production?
...th an inline ENV var. That said, if this was done then a script / alias / etc should live somewhere on-disk, which will include the RAILS_ENV var. One can search the disk for it, such as with ack
– New Alexandria
Jan 9 '13 at 3:29
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List comprehension: Returning two (or more) items for each item
...he form:
result = []
for n in some_data:
result += some_operation()
## etc.
(I.e. for loops intended to produce a side effect on a list or similar data structure)
Can be refactored into a declarative map/reduce/filter implementation.
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How to split a long regular expression into multiple lines in JavaScript?
...pace in the regular expression string (always use \s, \s+, \s{1,x}, \t, \n etc).
(() => {
const createRegExp = (str, opts) =>
new RegExp(str.raw[0].replace(/\s/gm, ""), opts || "");
const yourRE = createRegExp`
^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"...
How can I find WPF controls by name or type?
...urn null;
T foundChild = null;
int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < childrenCount; i++)
{
var child = VisualTreeHelper.GetChild(parent, i);
// If the child is not of the request child type child
T childType = child as T;
if (...
Benefit of using Parcelable instead of serializing object
...ted, and uses a format that other people use): ProtocolBuffers, JSON, XML, etc. It's a shame the Android library really sucks in this regard.
– user166390
Jan 15 '13 at 6:39
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Maintain aspect ratio of div but fill screen width and height in CSS?
...object {
width: 80%; /* whatever width here, can be fixed no of pixels etc. */
height: 0px;
padding-bottom: 56.25%;
}
.object .content {
position: absolute;
top: 0px;
left: 0px;
height: 100%;
width: 100%;
box-sizing: border-box;
-moz-box-sizing: border-box;
...
How do I use WebRequest to access an SSL encrypted site using https?
...lem! For LetsEncrypt with nginX on linux, the protocols are defined here: /etc/letsencrypt/options-ssl-nginx.conf
– Jerther
Oct 3 '17 at 13:18
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How do I measure execution time of a command on the Windows command line?
... In case you want to use internal dos commands (eg.: dir, echo, del, etc.) don't forget to insert "cmd /c": Measure-Command { cmd /c dir /s c:\windows > nul }
– LietKynes
Jan 10 '12 at 10:49
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